Statistics of Price Movements of California Water Service Group Holding (CWT)

The price movements of California Water Service Group Holding (ticker CWT) 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 CWT 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 CWT had a big price move
• Table 11. Statistics of daily price changes in the 20 days after CWT moved 5% with twice the 30-day average volume

The statistics are calculated using CWT's price data across 1,549 trading days from 2015 to 2020.

Table 1. Statistics of CWT 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 1,549 trading days, 52.6% of the time (815 days), CWT closed above the previous day's closing price. 42.0% of the time (650 days), it closed below the previous day's closing price. 5.4% of the time (83 days), it did not change.

Also see: VIX price movement study.

CWT Price Change (%)	Number of Days	% of Total Sessions
29 – 30%	1	0.06%
9 – 10%	2	0.13%
8 – 9%	1	0.06%
7 – 8%	1	0.06%
6 – 7%	2	0.13%
5 – 6%	6	0.39%
4 – 5%	8	0.52%
3 – 4%	17	1.10%
2 – 3%	81	5.23%
1 – 2%	257	16.60%
0 – 1%	439	28.36%
0%	83	5.36%
0 – -1%	332	21.45%
-1 – -2%	191	12.34%
-2 – -3%	70	4.52%
-3 – -4%	30	1.94%
-4 – -5%	11	0.71%
-5 – -6%	6	0.39%
-6 – -7%	3	0.19%
-7 – -8%	3	0.19%
-10 – -11%	3	0.19%
-11 – -12%	1	0.06%

Table 2. Statistics of CWT: 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 CWT.

50.4% of the time (781 days), CWT closed above the opening price. 44.2% of the time (685 days), it closed below the opening price. 5.4% of the time (83 days), it closed where it started.

Closing - Open (%)	Number of Days	% of Total Sessions
26 – 27%	1	0.06%
7 – 8%	3	0.19%
6 – 7%	1	0.06%
5 – 6%	4	0.26%
4 – 5%	10	0.65%
3 – 4%	23	1.48%
2 – 3%	62	4.00%
1 – 2%	257	16.59%
0 – 1%	420	27.11%
0%	83	5.36%
0 – -1%	382	24.66%
-1 – -2%	194	12.52%
-2 – -3%	67	4.33%
-3 – -4%	22	1.42%
-4 – -5%	12	0.77%
-5 – -6%	4	0.26%
-7 – -8%	1	0.06%
-8 – -9%	2	0.13%
-10 – -11%	1	0.06%

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

In the past 1,549 trading days, CWT opened more than 5% higher than the previous day's closing price 0 times. Of these days, NaN% (0 days) had closing prices above the opening price, and NaN% (0 days) had closing prices below the opening price.

Closing - Open (%)	Number of Days	% of Total Sessions

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

On 5 days, CWT opened 4–5% higher than the previous day's closing price. Of these days, 40.0% (2 days) had closing prices above the opening price, and 60.0% (3 days) had closing prices below the opening price.

Closing - Open (%)	Number of Days	% of Total Sessions
3 – 4%	1	20.00%
0 – 1%	1	20.00%
-1 – -2%	2	40.00%
-2 – -3%	1	20.00%

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

3 times CWT opened 3 – 4% higher than the previous day's closing price. Among these days, 66.7% (2 days) closed above the opening price, 33.3% (1 days) closed below the opening price.

Closing - Open (%)	Number of Days	% of Total Sessions
6 – 7%	1	33.33%
1 – 2%	1	33.33%
0 – -1%	1	33.33%

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

10 times CWT opened 2 – 3% higher than the previous day's closing price. Among these days, 30.0% (3 days) closed above the opening price, 70.0% (7 days) closed below the opening price.

Closing - Open (%)	Number of Days	% of Total Sessions
26 – 27%	1	10.00%
3 – 4%	1	10.00%
0 – 1%	1	10.00%
0 – -1%	5	50.00%
-1 – -2%	1	10.00%
-5 – -6%	1	10.00%

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

40 times CWT opened 1 – 2% higher than the previous day's closing price. Among these days, 55.0% (22 days) closed above the opening price, 45.0% (18 days) closed below the opening price.

Closing - Open (%)	Number of Days	% of Total Sessions
7 – 8%	1	2.50%
4 – 5%	3	7.50%
3 – 4%	1	2.50%
2 – 3%	1	2.50%
1 – 2%	4	10.00%
0 – 1%	12	30.00%
0 – -1%	9	22.50%
-1 – -2%	6	15.00%
-2 – -3%	1	2.50%
-4 – -5%	1	2.50%
-5 – -6%	1	2.50%

Table 8. Periods when CWT moved 15% or more

In this table, we track the price movements in the 20 days after CWT 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
20200317	29.3%	-2.4	-14.6	-12.1	-9.2	-16.5	-8.9	-4.6

Table 9. Periods when CWT moved 10% or more

In this table, we track the price movements in the 20 days after CWT 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
20200317	29.3%	-2.4	-14.6	-12.1	-9.2	-16.5	-8.9	-4.6
20150730	-10.1%	5.4	5.8	2.6	8.3	7.9	8.7	.3
20200401	-10.5%	2.2	9.2	20.1	14.5	11.2	8.9	10.5
20200323	-10.6%	1.5	1.3	-4.9	7.3	14.2	15.0	13.3
20200430	-11.1%	3.0	-.6	.7	-3.4	-3.0	.6	2.1

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

Of the 1,549 trading days from 2015 to 2020, there were 1 days in which CWT was up more than 10%. This table shows the average price changes over the 1 days.

Average Type	Average Price Change
Days after:	1	4	7	10	13	16	19
Avg for Change ≥ 10%	-2.4	-14.6	-12.1	-9.2	-16.5	-8.9	-4.6

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

Of the 1,549 trading days from 2015 to 2020, there were 4 days in which CWT was down more than -10%. This table shows the average price changes over the 4 days.

Average Type	Average Price Change
Days after:	1	4	7	10	13	16	19
Avg for Change ≥ -10%	3.0	3.9	4.6	6.7	7.6	8.3	6.6

Table 10. Periods when CWT moved 5% or more

In this table, we track the price movements in the 20 days after CWT 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
20200317	29.3%	-2.4	-14.6	-12.1	-9.2	-16.5	-8.9	-4.6
20200406	9.7%	-3.2	6.5	1.5	-1.5	-3.4	-2.0	-8.8
20200330	9%	-3.8	-11.6	-3.5	1.1	-.3	-5.8	-6.3
20201109	8.5%	5.4	3.5	-.8	-.2	.7	-2.3	-2.3
20200409	7%	.0	-4.6	-7.4	-9.3	-8.0	-14.4	-17.4
20200326	6.7%	-1.6	-7.7	4.2	10.9	11.7	10.0	2.8
20200304	6.1%	-1.0	-4.0	-16.1	-.8	-13.2	-10.7	-7.8
20170223	5.9%	-1.6	-1.6	-4.3	-8.8	-8.4	-7.6	-7.2
20190131	5.7%	-1.7	-.4	4.1	2.7	3.3	6.8	4.5
20161122	5.5%	-7.1	-2.2	-6.7	-6.4	-5.2	-8.3	-6.7
20150731	5.4%	.9	-1.0	-1.1	4.7	3.8	-2.7	-3.9
20180307	5.3%	-.8	.8	.3	2.1	-1.1	-.1	-2.1
20201110	5.3%	-.3	.3	-6.2	-4.1	-5.6	-7.0	-6.6
20200227	-5.2%	-3.9	9.3	4.5	-10.6	11.0	6.2	-8.5
20160226	-5.3%	4.6	10.7	11.1	9.9	8.7	8.6	11.0
20200415	-5.3%	1.2	-4.4	-4.9	-1.9	-11.5	-12.5	-14.9
20150130	-5.4%	2.0	2.8	.2	-2.6	-.2	-.6	3.2
20161028	-5.5%	2.0	1.0	2.8	7.1	13.3	14.7	12.5
20150824	-5.6%	-2.8	-.9	-4.4	-6.0	-4.3	.1	1.5
20151029	-6.2%	-2.0	-.4	-4.1	-5.8	-7.0	-4.0	-4.0
20200316	-6.4%	29.4	23.7	6.6	22.1	7.4	14.7	26.1
20200420	-6.7%	-1.5	-2.1	1.0	-8.8	-9.8	-12.4	-13.8
20161123	-7%	.0	5.6	.4	.9	2.2	-.7	.0
20200311	-7.5%	-7.8	14.5	9.5	-5.7	8.1	-5.0	1.5
20200312	-7.8%	2.6	21.3	6.1	9.2	12.8	3.7	13.2
20150730	-10.1%	5.4	5.8	2.6	8.3	7.9	8.7	.3
20200401	-10.5%	2.2	9.2	20.1	14.5	11.2	8.9	10.5
20200323	-10.6%	1.5	1.3	-4.9	7.3	14.2	15.0	13.3
20200430	-11.1%	3.0	-.6	.7	-3.4	-3.0	.6	2.1

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

Of the 1,549 trading days from 2015 to 2020, there were 13 days in which CWT was up more than 5%. This table shows the average price changes over the 13 days.

Average Type	Average Price Change
Days after:	1	4	7	10	13	16	19
Avg for Change ≥ 5%	-1.3	-2.8	-3.7	-1.4	-3.2	-4.1	-5.1

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

Of the 1,549 trading days from 2015 to 2020, there were 16 days in which CWT was down more than -5%. This table shows the average price changes over the 16 days.

Average Type	Average Price Change
Days after:	1	4	7	10	13	16	19
Avg for Change ≥ -5%	2.2	6.0	2.9	2.2	3.8	2.9	3.4

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Also see: VIX price movement study.