Statistics of Price Movements of Acm Research Inc (ACMR)

The price movements of Acm Research Inc (ticker ACMR) are summarized in five ways:

• Table 1. Statistics of daily price changes using the closing prices
• Table 2. Statistics of daily price changes using the closing and opening prices
• Table 3 – 7. Statistics of daily price changes when ACMR opened with an increase of 1%, 2%, 3%, 4%, or more than 5%
• Table 8 – 10. Statistics of stock price changes in the 20 days after ACMR had a big price move
• Table 11. Statistics of daily price changes in the 20 days after ACMR moved 5% with twice the 30-day average volume

The statistics are calculated using ACMR's price data across 806 trading days from 2017 to 2020.

Table 1. Statistics of ACMR one-day price changes

In this table, the one-day price change is calculated using the closing price and the previous day's closing price.

In the past 806 trading days, 49.3% of the time (397 days), ACMR closed above the previous day's closing price. 45.7% of the time (368 days), it closed below the previous day's closing price. 5.0% of the time (40 days), it did not change.

Also see: VIX price movement study.

ACMR Price Change (%)	Number of Days	% of Total Sessions
40 – 41%	1	0.12%
22 – 23%	2	0.25%
20 – 21%	1	0.12%
19 – 20%	3	0.37%
18 – 19%	3	0.37%
16 – 17%	2	0.25%
15 – 16%	5	0.62%
14 – 15%	2	0.25%
13 – 14%	2	0.25%
12 – 13%	3	0.37%
11 – 12%	6	0.75%
10 – 11%	3	0.37%
9 – 10%	9	1.12%
8 – 9%	11	1.37%
7 – 8%	15	1.86%
6 – 7%	19	2.36%
5 – 6%	22	2.73%
4 – 5%	31	3.85%
3 – 4%	38	4.72%
2 – 3%	48	5.96%
1 – 2%	83	10.31%
0 – 1%	88	10.93%
0%	40	4.97%
0 – -1%	76	9.44%
-1 – -2%	76	9.44%
-2 – -3%	57	7.08%
-3 – -4%	42	5.22%
-4 – -5%	45	5.59%
-5 – -6%	17	2.11%
-6 – -7%	11	1.37%
-7 – -8%	15	1.86%
-8 – -9%	6	0.75%
-9 – -10%	8	0.99%
-10 – -11%	3	0.37%
-11 – -12%	5	0.62%
-12 – -13%	1	0.12%
-15 – -16%	1	0.12%
-16 – -17%	1	0.12%
-17 – -18%	1	0.12%
-20 – -21%	1	0.12%
-28 – -29%	2	0.25%

Table 2. Statistics of ACMR: Closing vs. Open

In this table, instead of using the closing price of the previous day, the opening price is used to calculate the one-day price change of ACMR.

46.4% of the time (374 days), ACMR closed above the opening price. 48.8% of the time (393 days), it closed below the opening price. 4.8% of the time (39 days), it closed where it started.

Closing - Open (%)	Number of Days	% of Total Sessions
36 – 37%	1	0.12%
24 – 25%	1	0.12%
18 – 19%	1	0.12%
17 – 18%	1	0.12%
16 – 17%	3	0.37%
15 – 16%	3	0.37%
14 – 15%	4	0.50%
13 – 14%	4	0.50%
12 – 13%	1	0.12%
11 – 12%	4	0.50%
10 – 11%	2	0.25%
9 – 10%	7	0.87%
8 – 9%	7	0.87%
7 – 8%	10	1.24%
6 – 7%	18	2.23%
5 – 6%	25	3.10%
4 – 5%	24	2.98%
3 – 4%	44	5.46%
2 – 3%	52	6.45%
1 – 2%	69	8.56%
0 – 1%	93	11.54%
0%	39	4.84%
0 – -1%	96	11.91%
-1 – -2%	80	9.93%
-2 – -3%	50	6.20%
-3 – -4%	55	6.82%
-4 – -5%	33	4.09%
-5 – -6%	26	3.23%
-6 – -7%	14	1.74%
-7 – -8%	12	1.49%
-8 – -9%	9	1.12%
-9 – -10%	3	0.37%
-10 – -11%	3	0.37%
-11 – -12%	3	0.37%
-12 – -13%	1	0.12%
-13 – -14%	1	0.12%
-14 – -15%	3	0.37%
-15 – -16%	1	0.12%
-16 – -17%	1	0.12%
-22 – -23%	1	0.12%
-25 – -26%	1	0.12%

Table 3. One-day performance when ACMR opened 5% higher than previous close

In the past 806 trading days, ACMR opened more than 5% higher than the previous day's closing price 20 times. Of these days, 45.0% (9 days) had closing prices above the opening price, and 55.0% (11 days) had closing prices below the opening price.

Closing - Open (%)	Number of Days	% of Total Sessions
14 – 15%	1	5.00%
13 – 14%	1	5.00%
5 – 6%	1	5.00%
3 – 4%	3	15.00%
2 – 3%	1	5.00%
1 – 2%	1	5.00%
0 – 1%	1	5.00%
0 – -1%	3	15.00%
-1 – -2%	1	5.00%
-2 – -3%	1	5.00%
-3 – -4%	1	5.00%
-4 – -5%	1	5.00%
-5 – -6%	1	5.00%
-6 – -7%	2	10.00%
-10 – -11%	1	5.00%

Table 4. Closing vs. open when ACMR opened 4–5% higher

On 7 days, ACMR opened 4–5% higher than the previous day's closing price. Of these days, 28.6% (2 days) had closing prices above the opening price, and 71.4% (5 days) had closing prices below the opening price.

Closing - Open (%)	Number of Days	% of Total Sessions
3 – 4%	1	14.29%
2 – 3%	1	14.29%
-1 – -2%	3	42.86%
-3 – -4%	1	14.29%
-11 – -12%	1	14.29%

Table 5. Closing vs. open when ACMR open 3 – 4% higher

12 times ACMR opened 3 – 4% higher than the previous day's closing price. Among these days, 33.3% (4 days) closed above the opening price, 66.7% (8 days) closed below the opening price.

Closing - Open (%)	Number of Days	% of Total Sessions
7 – 8%	1	8.33%
5 – 6%	1	8.33%
4 – 5%	1	8.33%
1 – 2%	1	8.33%
0 – -1%	1	8.33%
-1 – -2%	1	8.33%
-2 – -3%	2	16.67%
-4 – -5%	2	16.67%
-5 – -6%	1	8.33%
-14 – -15%	1	8.33%

Table 6. Closing vs. open when ACMR open 2 – 3% higher

46 times ACMR opened 2 – 3% higher than the previous day's closing price. Among these days, 52.2% (24 days) closed above the opening price, 47.8% (22 days) closed below the opening price.

Closing - Open (%)	Number of Days	% of Total Sessions
36 – 37%	1	2.17%
17 – 18%	1	2.17%
16 – 17%	1	2.17%
14 – 15%	1	2.17%
12 – 13%	1	2.17%
10 – 11%	1	2.17%
8 – 9%	2	4.35%
6 – 7%	2	4.35%
4 – 5%	1	2.17%
2 – 3%	4	8.70%
1 – 2%	3	6.52%
0 – 1%	6	13.04%
0 – -1%	4	8.70%
-1 – -2%	5	10.87%
-2 – -3%	1	2.17%
-3 – -4%	4	8.70%
-4 – -5%	4	8.70%
-6 – -7%	1	2.17%
-8 – -9%	2	4.35%
-14 – -15%	1	2.17%

Table 7. Closing vs. open when ACMR open 1 – 2% higher

105 times ACMR opened 1 – 2% higher than the previous day's closing price. Among these days, 56.2% (59 days) closed above the opening price, 42.9% (45 days) closed below the opening price.

Closing - Open (%)	Number of Days	% of Total Sessions
16 – 17%	1	0.95%
11 – 12%	1	0.95%
9 – 10%	1	0.95%
7 – 8%	1	0.95%
6 – 7%	4	3.81%
5 – 6%	6	5.71%
4 – 5%	4	3.81%
3 – 4%	8	7.62%
2 – 3%	7	6.67%
1 – 2%	10	9.52%
0 – 1%	16	15.24%
0%	1	0.95%
0 – -1%	12	11.43%
-1 – -2%	9	8.57%
-2 – -3%	8	7.62%
-3 – -4%	5	4.76%
-4 – -5%	3	2.86%
-5 – -6%	4	3.81%
-7 – -8%	1	0.95%
-8 – -9%	1	0.95%
-11 – -12%	1	0.95%
-12 – -13%	1	0.95%

Table 8. Periods when ACMR moved 15% or more

In this table, we track the price movements in the 20 days after ACMR had a one-day price change of at least 15%.

Date	Price Change	Price Change after 15% Move
Days after:		1	4	7	10	13	16	19
20180306	40%	9.0	24.5	27.5	19.7	17.4	12.5	11.9
20200706	22.6%	-9.0	1.0	3.8	6.8	8.5	5.5	18.7
20201109	22%	-8.9	-8.0	-18.5	-18.6	-16.0	-8.5	-15.2
20200114	20.2%	11.3	14.2	27.4	20.5	10.0	11.9	31.7
20200406	19.6%	2.2	1.6	2.9	10.7	10.1	17.5	9.6
20200514	19.3%	-2.2	-8.2	-11.9	-2.3	1.5	4.0	-2.8
20180123	19.1%	-4.1	-3.9	6.0	20.7	14.8	10.2	14.5
20200319	18.8%	7.7	35.1	46.3	34.2	62.2	61.4	63.3
20200323	18.8%	7.7	8.2	4.3	24.1	26.2	31.9	37.6
20200121	18.2%	13.7	-12.0	-15.5	-10.1	-15.6	-4.5	-8.4
20200107	16.6%	1.1	7.3	48.2	74.2	45.8	51.2	45.0
20181108	16.5%	-2.2	-5.4	-8.8	-8.4	-10.3	-7.1	-12.7
20180507	15.7%	-7.8	-3.4	-6.1	-10.2	-6.3	-7.8	12.4
20200210	15.4%	-5.5	-6.0	-4.0	-8.0	-15.6	-14.5	-23.0
20190220	15.3%	-3.1	-.4	.9	10.3	3.1	20.0	38.7
20200511	15.3%	4.1	9.0	2.3	-1.8	8.9	13.1	16.0
20180320	15.2%	-7.0	-3.0	-6.6	-6.5	-10.4	-3.3	-3.6
20200309	-15.6%	-.8	-15.3	-36.1	-2.9	10.7	9.6	.7
20200520	-16.1%	-1.1	7.5	8.6	18.2	3.2	.5	7.7
20200123	-17%	-11.3	-8.0	-11.7	-8.1	-2.4	-2.9	-.8
20190814	-20.7%	-3.7	-1.9	-2.9	-4.1	-1.4	3.4	.5
20200318	-28.1%	18.8	63.7	64.5	58.5	88.7	91.8	100.5
20200908	-28.1%	1.9	20.0	19.3	18.5	18.5	17.2	28.7

Table 8a. ACMR average price changes following a 15% up day

Of the 806 trading days from 2017 to 2020, there were 17 days in which ACMR was up more than 15%. This table shows the average price changes over the 17 days.

Average Type	Average Price Change
Days after:	1	4	7	10	13	16	19
Avg for Change ≥ 15%	.4	3.0	5.8	9.1	7.9	11.4	13.7

Table 8b. ACMR average price changes following a 15% down day

Of the 806 trading days from 2017 to 2020, there were 6 days in which ACMR was down more than -15%. This table shows the average price changes over the 6 days.

Average Type	Average Price Change
Days after:	1	4	7	10	13	16	19
Avg for Change ≥ -15%	.7	11.0	6.9	13.3	19.5	19.9	22.9

Table 9. Periods when ACMR moved 10% or more

In this table, we track the price movements in the 20 days after ACMR had a one-day price change of at least 10%.

Date	Price Change	Price Change after 10% Move
Days after:		1	4	7	10	13	16	19
20180306	40%	9.0	24.5	27.5	19.7	17.4	12.5	11.9
20200706	22.6%	-9.0	1.0	3.8	6.8	8.5	5.5	18.7
20201109	22%	-8.9	-8.0	-18.5	-18.6	-16.0	-8.5	-15.2
20200114	20.2%	11.3	14.2	27.4	20.5	10.0	11.9	31.7
20200406	19.6%	2.2	1.6	2.9	10.7	10.1	17.5	9.6
20200514	19.3%	-2.2	-8.2	-11.9	-2.3	1.5	4.0	-2.8
20180123	19.1%	-4.1	-3.9	6.0	20.7	14.8	10.2	14.5
20200319	18.8%	7.7	35.1	46.3	34.2	62.2	61.4	63.3
20200323	18.8%	7.7	8.2	4.3	24.1	26.2	31.9	37.6
20200121	18.2%	13.7	-12.0	-15.5	-10.1	-15.6	-4.5	-8.4
20200107	16.6%	1.1	7.3	48.2	74.2	45.8	51.2	45.0
20181108	16.5%	-2.2	-5.4	-8.8	-8.4	-10.3	-7.1	-12.7
20180507	15.7%	-7.8	-3.4	-6.1	-10.2	-6.3	-7.8	12.4
20200210	15.4%	-5.5	-6.0	-4.0	-8.0	-15.6	-14.5	-23.0
20190220	15.3%	-3.1	-.4	.9	10.3	3.1	20.0	38.7
20200511	15.3%	4.1	9.0	2.3	-1.8	8.9	13.1	16.0
20180320	15.2%	-7.0	-3.0	-6.6	-6.5	-10.4	-3.3	-3.6
20200317	14.3%	-28.2	9.2	24.5	23.3	13.2	45.2	38.6
20180712	14.2%	1.5	-.6	8.0	9.8	4.2	18.5	16.9
20190701	13.9%	-2.3	-7.3	-5.4	-7.1	7.0	2.2	.1
20200122	13.6%	-17.0	-21.5	-28.4	-27.1	-14.3	-20.2	-13.8
20200507	12.4%	5.6	13.8	43.9	23.3	34.0	35.3	47.3
20180308	12.2%	-2.5	11.0	-15.1	-7.1	-4.2	-8.6	-8.6
20200803	12.1%	.1	-5.2	-2.0	-.8	-9.5	-9.0	-14.5
20200526	11.9%	-.1	7.9	10.0	-2.9	-4.8	3.7	-2.7
20180201	11.7%	1.8	13.0	9.7	6.8	9.3	19.3	13.3
20200708	11.4%	5.0	10.7	-3.6	8.4	2.8	12.5	31.3
20200113	11.2%	20.2	37.3	84.6	43.0	37.1	45.9	37.1
20200115	11.2%	3.3	21.4	1.6	5.4	1.1	5.3	11.8
20200422	11.2%	-3.4	3.2	-3.8	6.0	45.2	61.8	77.1
20180601	10.6%	-4.1	-13.1	-4.4	-.6	-7.8	-14.9	-22.5
20190808	10.6%	-3.6	-18.6	-21.1	-17.4	-22.2	-19.8	-11.9
20180205	10.4%	1.2	-3.7	-7.6	-4.0	3.9	5.0	7.3
20200513	-10.2%	19.4	30.6	5.2	17.7	27.1	29.5	14.3
20200501	-10.6%	.3	23.9	57.1	64.5	54.4	48.2	64.4
20190422	-10.9%	2.8	-.6	6.3	12.0	13.1	21.3	17.6
20190516	-11.2%	1.6	-7.7	-4.5	.1	-1.3	-2.5	-3.9
20180316	-11.3%	-8.1	.5	3.6	-1.1	-1.1	-3.5	11.7
20200124	-11.3%	5.2	.9	7.4	.9	14.1	9.5	19.4
20200903	-11.7%	-2.3	-27.8	-15.0	-13.3	-19.2	-18.7	-10.3
20190322	-11.9%	4.7	4.6	5.5	9.1	6.0	6.6	26.9
20190307	-12.5%	5.0	14.2	34.1	48.2	42.5	39.1	41.5
20200309	-15.6%	-.8	-15.3	-36.1	-2.9	10.7	9.6	.7
20200520	-16.1%	-1.1	7.5	8.6	18.2	3.2	.5	7.7
20200123	-17%	-11.3	-8.0	-11.7	-8.1	-2.4	-2.9	-.8
20190814	-20.7%	-3.7	-1.9	-2.9	-4.1	-1.4	3.4	.5
20200318	-28.1%	18.8	63.7	64.5	58.5	88.7	91.8	100.5
20200908	-28.1%	1.9	20.0	19.3	18.5	18.5	17.2	28.7

Table 9a. ACMR average price changes following a 10% up day

Of the 806 trading days from 2017 to 2020, there were 33 days in which ACMR was up more than 10%. This table shows the average price changes over the 33 days.

Average Type	Average Price Change
Days after:	1	4	7	10	13	16	19
Avg for Change ≥ 10%	-.5	3.3	5.7	6.5	6.9	11.4	13.3

Table 9b. ACMR average price changes following a 10% down day

Of the 806 trading days from 2017 to 2020, there were 15 days in which ACMR was down more than -10%. This table shows the average price changes over the 15 days.

Average Type	Average Price Change
Days after:	1	4	7	10	13	16	19
Avg for Change ≥ -10%	2.2	7.0	9.4	14.5	16.9	16.6	21.3

Table 10. Periods when ACMR moved 5% or more

In this table, we track the price movements in the 20 days after ACMR had a one-day price change of at least 5%.

Date	Price Change	Price Change after 5% Move
Days after:		1	4	7	10	13	16	19
20180306	40%	9.0	24.5	27.5	19.7	17.4	12.5	11.9
20200706	22.6%	-9.0	1.0	3.8	6.8	8.5	5.5	18.7
20201109	22%	-8.9	-8.0	-18.5	-18.6	-16.0	-8.5	-15.2
20200114	20.2%	11.3	14.2	27.4	20.5	10.0	11.9	31.7
20200406	19.6%	2.2	1.6	2.9	10.7	10.1	17.5	9.6
20200514	19.3%	-2.2	-8.2	-11.9	-2.3	1.5	4.0	-2.8
20180123	19.1%	-4.1	-3.9	6.0	20.7	14.8	10.2	14.5
20200319	18.8%	7.7	35.1	46.3	34.2	62.2	61.4	63.3
20200323	18.8%	7.7	8.2	4.3	24.1	26.2	31.9	37.6
20200121	18.2%	13.7	-12.0	-15.5	-10.1	-15.6	-4.5	-8.4
20200107	16.6%	1.1	7.3	48.2	74.2	45.8	51.2	45.0
20181108	16.5%	-2.2	-5.4	-8.8	-8.4	-10.3	-7.1	-12.7
20180507	15.7%	-7.8	-3.4	-6.1	-10.2	-6.3	-7.8	12.4
20200210	15.4%	-5.5	-6.0	-4.0	-8.0	-15.6	-14.5	-23.0
20190220	15.3%	-3.1	-.4	.9	10.3	3.1	20.0	38.7
20200511	15.3%	4.1	9.0	2.3	-1.8	8.9	13.1	16.0
20180320	15.2%	-7.0	-3.0	-6.6	-6.5	-10.4	-3.3	-3.6
20200317	14.3%	-28.2	9.2	24.5	23.3	13.2	45.2	38.6
20180712	14.2%	1.5	-.6	8.0	9.8	4.2	18.5	16.9
20190701	13.9%	-2.3	-7.3	-5.4	-7.1	7.0	2.2	.1
20200122	13.6%	-17.0	-21.5	-28.4	-27.1	-14.3	-20.2	-13.8
20200507	12.4%	5.6	13.8	43.9	23.3	34.0	35.3	47.3
20180308	12.2%	-2.5	11.0	-15.1	-7.1	-4.2	-8.6	-8.6
20200803	12.1%	.1	-5.2	-2.0	-.8	-9.5	-9.0	-14.5
20200526	11.9%	-.1	7.9	10.0	-2.9	-4.8	3.7	-2.7
20180201	11.7%	1.8	13.0	9.7	6.8	9.3	19.3	13.3
20200708	11.4%	5.0	10.7	-3.6	8.4	2.8	12.5	31.3
20200113	11.2%	20.2	37.3	84.6	43.0	37.1	45.9	37.1
20200115	11.2%	3.3	21.4	1.6	5.4	1.1	5.3	11.8
20200422	11.2%	-3.4	3.2	-3.8	6.0	45.2	61.8	77.1
20180601	10.6%	-4.1	-13.1	-4.4	-.6	-7.8	-14.9	-22.5
20190808	10.6%	-3.6	-18.6	-21.1	-17.4	-22.2	-19.8	-11.9
20180205	10.4%	1.2	-3.7	-7.6	-4.0	3.9	5.0	7.3
20200106	9.9%	16.7	12.5	67.4	71.9	91.7	81.3	65.4
20190718	9.8%	-4.0	-4.1	-5.1	-15.9	-16.8	-9.7	-23.8
20180703	9.6%	.0	2.5	13.2	13.0	15.4	22.6	16.3
20200911	9.3%	6.6	6.0	5.3	5.3	4.1	14.4	6.7
20200720	9.2%	1.7	-1.5	3.4	24.6	30.1	13.9	21.2
20180412	9.1%	-2.2	-13.4	-18.0	-26.1	-27.2	-22.2	-15.5
20180307	9%	12.3	18.8	3.8	2.2	6.6	2.6	2.7
20190314	9%	-1.1	15.4	9.9	9.8	10.7	14.5	11.2
20201001	9%	-3.2	-4.6	3.2	.1	-2.7	-9.8	-3.4
20190318	8.9%	7.3	-2.6	1.4	4.0	6.5	1.9	4.6
20191107	8.6%	-7.9	-7.2	-9.6	-8.6	-9.9	-11.8	-9.8
20200702	8.6%	.0	24.4	26.8	16.3	33.2	29.0	35.5
20200714	8.6%	-7.6	-4.9	-3.3	-6.0	5.7	18.9	10.4
20201127	8.6%
20180530	8.5%	1.4	.5	-3.7	6.6	8.4	-4.7	-4.8
20180305	8.4%	40.0	67.2	90.2	45.5	59.1	64.1	56.6
20200429	8.3%	-3.6	-9.1	12.6	21.3	53.5	31.5	42.9
20200518	8.3%	3.3	-16.9	-7.0	.5	2.3	-9.7	-11.4
20201111	8.3%	-4.2	-14.0	-16.9	-14.8	-8.7	-10.4	-10.1
20201207	8.2%
20200204	7.9%	-7.8	8.4	.9	9.1	1.0	-2.6	-4.4
20200326	7.9%	-5.1	-8.6	8.9	10.6	15.7	20.6	24.0
20180302	7.7%	8.5	85.9	96.7	71.8	69.2	76.5	69.9
20200324	7.7%	-1.9	6.2	-2.5	17.7	17.1	18.6	27.6
20190515	7.6%	-11.3	-14.6	-15.3	-11.0	-13.5	-13.1	-14.3
20191216	7.6%	2.7	1.5	6.3	-.2	4.1	34.7	29.9
20200320	7.6%	18.8	35.5	34.2	23.2	58.0	50.8	61.9
20200630	7.5%	-2.7	29.6	38.1	45.5	26.7	42.6	35.2
20190305	7.4%	-5.0	-11.2	3.4	19.5	8.5	13.0	15.8
20200623	7.3%	2.8	-6.2	6.5	19.0	32.0	35.7	39.6
20190319	7.2%	-.1	-5.0	-5.0	-4.2	-.9	-3.8	-3.2
20200812	7.2%	-.6	-.5	-8.8	-8.9	-15.7	-20.3	-43.0
20190304	7.1%	7.4	-6.3	1.9	19.6	32.3	27.1	24.1
20171221	7%	-4.1	-4.7	1.7	3.0	1.6	.2	-3.1
20180102	7%	-5.7	-6.8	-6.8	-12.1	-11.2	-3.4	-3.2
20180913	6.9%	-3.7	-3.5	-4.1	-10.6	-9.1	-14.7	-15.0
20200218	6.9%	-4.6	-8.5	-16.1	-15.0	-23.4	-38.8	-49.8
20180801	6.8%	3.2	-.8	6.5	-7.4	-7.3	-5.3	.8
20200220	6.8%	-9.2	-12.4	-14.0	-17.3	-37.2	-46.4	-59.6
20200601	6.8%	-4.7	-2.3	-8.7	-8.5	-4.3	-3.2	-5.1
20200603	6.8%	.0	-11.7	-13.4	-5.7	-11.5	-2.9	-4.2
20190417	6.7%	5.0	-4.0	-7.1	-.7	4.6	5.7	13.3
20190904	6.7%	-4.5	-7.1	-6.4	-6.5	-5.4	-10.2	-13.8
20200416	6.7%	1.0	3.8	6.4	11.8	5.5	30.6	40.7
20201102	6.7%	22.1	15.4	3.6	.1	2.6	10.0	8.0
20200914	6.6%	.9	2.9	-4.1	-3.4	6.5	-.8	6.6
20171120	6.5%	1.1	-6.4	-7.6	-12.0	-19.6	-20.4	-31.9
20201009	6.5%	3.1	-.0	-2.8	-9.9	-3.5	-.4	19.9
20190313	6.4%	9.0	26.0	14.4	19.1	22.1	25.1	19.7
20180524	6.3%	-4.2	6.9	15.0	4.3	14.7	19.3	10.6
20191104	6.3%	4.5	5.7	6.5	3.7	4.8	3.4	1.2
20190416	6.2%	6.8	-.2	-2.5	5.1	11.6	12.3	14.1
20191213	6.2%	7.7	8.2	14.4	8.9	9.2	24.3	39.0
20191223	6.2%	-1.5	-6.2	-6.0	7.0	19.7	61.0	83.9
20180723	5.9%	1.4	-1.4	3.1	9.2	8.9	-.5	-5.1
20190514	5.9%	7.6	-10.6	-11.1	-5.9	-2.9	-8.5	-4.7
20190618	5.9%	-1.4	-8.2	-12.9	-2.0	-7.1	-5.1	-6.8
20180808	5.8%	.6	-8.1	-12.3	-10.0	-5.4	-3.6	-6.0
20180611	5.7%	5.3	9.6	1.6	-6.3	-14.7	-13.9	-15.0
20190429	5.7%	.2	6.4	7.1	8.8	10.1	6.0	5.2
20171117	5.6%	6.5	.9	-1.3	-1.5	-14.5	-13.5	-19.6
20200330	5.6%	-1.3	-9.3	16.3	11.0	19.1	11.1	21.7
20200508	5.5%	15.4	28.7	40.8	13.3	26.8	36.9	39.5
20180612	5.3%	-.6	1.0	-11.2	-11.2	-19.8	-18.2	-16.2
20191024	5.3%	-.7	-3.7	1.0	15.9	10.7	6.8	8.4
20181121	5.2%	.0	-2.1	1.5	-4.7	-5.6	-3.4	-7.0
20200127	5.2%	1.3	-7.5	-5.9	10.7	3.0	11.3	3.1
20200505	5.2%	4.3	42.9	59.3	74.3	40.3	57.0	69.6
20200902	5.2%	-11.8	-36.9	-25.7	-26.1	-26.6	-26.6	-27.4
20180821	5.1%	-3.0	1.9	3.8	1.3	-.2	-15.9	-11.0
20190124	5.1%	2.8	-2.7	-4.4	-5.0	-2.8	-2.6	17.9
20191206	5.1%	-4.9	3.1	21.2	19.8	25.4	17.7	22.8
20180131	5%	11.7	27.2	21.0	16.2	20.7	30.5	32.0
20180622	5%	-4.6	-13.2	-12.4	-13.5	-13.2	-1.6	-.7
20190308	5%	1.8	18.5	36.9	24.3	29.4	32.7	36.0
20201028	5%	3.7	25.9	19.1	6.8	3.3	5.8	13.5
20180208	-5%	.9	-3.1	.6	8.9	10.1	12.4	86.2
20190306	-5%	-12.5	-6.2	7.6	25.6	19.6	19.5	20.5
20200213	-5%	1.0	3.2	-1.1	-9.3	-8.1	-17.2	-33.9
20200327	-5%	5.7	-3.0	17.2	16.6	18.0	27.0	26.3
20200819	-5%	-2.2	-1.7	-7.6	-4.4	-40.8	-33.4	-28.6
20181204	-5.1%	.0	-.9	1.4	-2.4	-2.0	-.5	3.9
20190625	-5.1%	1.3	15.2	11.9	9.1	6.9	12.2	18.7
20200409	-5.1%	.0	1.2	8.9	8.3	15.7	7.9	18.8
20200611	-5.1%	1.8	10.9	4.1	14.2	12.7	19.0	48.1
20200710	-5.1%	2.3	-6.1	7.5	4.2	9.4	31.8	37.6
20200109	-5.2%	.6	49.7	53.7	71.5	62.1	48.0	50.6
20171213	-5.3%	.2	-9.2	-10.5	-11.0	-5.1	-3.9	-5.2
20181005	-5.3%	3.5	-3.8	.0	-1.1	-7.1	-8.5	-3.4
20180910	-5.4%	-1.8	-8.2	-8.1	-8.6	-14.8	-13.4	-18.8
20200211	-5.4%	3.7	-.5	8.5	-4.6	-11.1	-9.2	-31.3
20200827	-5.4%	1.3	4.8	-35.1	-26.9	-21.7	-20.5	-24.1
20180103	-5.6%	.3	-1.1	-2.5	-5.7	-10.4	.2	-3.6
20180130	-6%	5.1	32.1	26.0	27.6	26.8	34.1	36.8
20180315	-6%	-11.3	-12.7	-8.9	-12.3	-12.3	-15.9	-9.2
20200227	-6%	-.5	1.7	-23.1	-33.3	-31.6	-37.1	-21.1
20171122	-6.3%	.0	-2.2	-2.3	-15.3	-14.2	-20.3	-27.8
20180807	-6.3%	5.8	.1	-5.6	-1.7	-1.7	.7	2.7
20180619	-6.4%	2.0	-5.9	-14.3	-13.5	-14.6	-14.3	-2.9
20180416	-6.5%	-3.1	-6.8	-16.5	-20.5	-18.9	-9.1	-4.8
20180605	-6.6%	.3	1.4	6.5	1.0	-.4	-12.2	-20.4
20180813	-6.7%	-2.8	-7.3	-4.8	.0	1.9	-.6	-2.0
20201030	-6.7%	6.8	28.6	16.3	7.9	4.8	19.0	15.9
20180321	-6.9%	2.0	5.2	.4	.4	-2.0	13.5	.5
20180702	-7%	9.7	8.3	8.7	23.2	24.3	35.9	32.1
20181010	-7.1%	-3.4	.4	-.7	-6.8	-8.1	-3.0	-3.0
20180627	-7.3%	-1.4	-.5	-1.8	-1.4	11.7	12.7	23.3
20171106	-7.4%	.0	2.1	11.4	31.1	24.1	21.4	21.3
20171205	-7.4%	-1.5	-.3	-7.4	-16.1	-17.2	-17.7	-12.2
20200421	-7.4%	11.3	14.1	19.8	13.1	40.0	50.9	90.8
20200715	-7.5%	-8.7	4.6	1.3	6.4	28.2	33.9	17.1
20201006	-7.5%	2.4	10.8	7.4	4.4	-3.2	3.7	7.0
20200401	-7.6%	.7	21.6	21.0	22.5	31.8	31.1	39.9
20180508	-7.7%	1.8	3.0	-1.2	-2.5	-2.7	8.6	16.8
20180424	-7.8%	1.0	-3.9	-2.0	9.8	15.0	11.8	6.9
20180621	-7.8%	5.0	-7.5	-16.1	-11.1	-4.7	5.8	3.5
20190520	-7.8%	2.9	2.0	7.2	4.1	4.7	3.2	-2.8
20191108	-7.8%	-.2	-.4	-3.1	-3.8	-4.4	-3.5	1.7
20200205	-7.8%	4.7	11.2	10.6	12.9	8.2	-.7	.6
20180319	-8.1%	15.2	12.9	8.3	7.7	5.0	9.4	18.9
20200316	-8.1%	14.3	5.0	31.8	42.7	31.0	58.3	57.4
20190801	-8.2%	.0	.6	11.3	-12.6	-11.1	-11.9	-13.1
20200312	-8.4%	-2.4	-26.4	11.9	27.6	26.4	16.1	48.9
20200716	-8.6%	3.1	16.1	10.0	20.5	40.5	33.0	37.6
20201110	-8.9%	8.3	-2.0	-9.1	-11.7	.3	-2.4	.7
20200608	-9%	1.1	-.8	8.0	1.4	11.2	9.8	16.0
20200707	-9%	11.5	13.5	4.1	19.3	15.6	21.4	46.2
20180912	-9.2%	6.9	4.8	4.9	-2.3	-.3	-3.7	-2.2
20200221	-9.2%	-1.2	-9.3	-8.2	-17.3	-33.9	-45.7	-47.1
20200306	-9.2%	-15.7	-26.8	-25.0	-31.1	-13.5	-6.4	-14.1
20200807	-9.2%	-1.7	2.8	2.9	-5.6	-5.8	-12.9	-17.6
20201209	-9.3%
20171215	-9.7%	2.8	3.2	.2	5.0	6.0	4.8	4.8
20200513	-10.2%	19.4	30.6	5.2	17.7	27.1	29.5	14.3
20200501	-10.6%	.3	23.9	57.1	64.5	54.4	48.2	64.4
20190422	-10.9%	2.8	-.6	6.3	12.0	13.1	21.3	17.6
20190516	-11.2%	1.6	-7.7	-4.5	.1	-1.3	-2.5	-3.9
20180316	-11.3%	-8.1	.5	3.6	-1.1	-1.1	-3.5	11.7
20200124	-11.3%	5.2	.9	7.4	.9	14.1	9.5	19.4
20200903	-11.7%	-2.3	-27.8	-15.0	-13.3	-19.2	-18.7	-10.3
20190322	-11.9%	4.7	4.6	5.5	9.1	6.0	6.6	26.9
20190307	-12.5%	5.0	14.2	34.1	48.2	42.5	39.1	41.5
20200309	-15.6%	-.8	-15.3	-36.1	-2.9	10.7	9.6	.7
20200520	-16.1%	-1.1	7.5	8.6	18.2	3.2	.5	7.7
20200123	-17%	-11.3	-8.0	-11.7	-8.1	-2.4	-2.9	-.8
20190814	-20.7%	-3.7	-1.9	-2.9	-4.1	-1.4	3.4	.5
20200318	-28.1%	18.8	63.7	64.5	58.5	88.7	91.8	100.5
20200908	-28.1%	1.9	20.0	19.3	18.5	18.5	17.2	28.7

Table 10a. ACMR average price changes following a 5% up day

Of the 806 trading days from 2017 to 2020, there were 109 days in which ACMR was up more than 5%. This table shows the average price changes over the 109 days.

Average Type	Average Price Change
Days after:	1	4	7	10	13	16	19
Avg for Change ≥ 5%	.9	3.0	5.8	5.9	7.2	9.4	10.3

Table 10b. ACMR average price changes following a 5% down day

Of the 806 trading days from 2017 to 2020, there were 72 days in which ACMR was down more than -5%. This table shows the average price changes over the 72 days.

Average Type	Average Price Change
Days after:	1	4	7	10	13	16	19
Avg for Change ≥ -5%	1.5	3.3	3.9	5.2	6.2	7.5	11.5

28 stocks with statistics: AAPL, AMD, AMZN, APPN, AZN, BA, BAC, BIIB, CRM, CSCO, CX, DIS, FB, GE, GM, GOOG, IBM, INTC, JPM, JPM, MSFT, MU, NFLX, O, QQQ, SPY, T, TSLA,

Also see: VIX price movement study.