Statistics of Price Movements of Nuvasive Inc (NUVA)

The price movements of Nuvasive Inc (ticker NUVA) 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 NUVA 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 NUVA had a big price move
• Table 11. Statistics of daily price changes in the 20 days after NUVA moved 5% with twice the 30-day average volume

The statistics are calculated using NUVA's price data across 1,547 trading days from 2015 to 2020.

Table 1. Statistics of NUVA 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 1,547 trading days, 51.0% of the time (788 days), NUVA closed above the previous day's closing price. 45.1% of the time (697 days), it closed below the previous day's closing price. 3.9% of the time (61 days), it did not change.

Also see: VIX price movement study.

NUVA Price Change (%)	Number of Days	% of Total Sessions
21 – 22%	1	0.06%
17 – 18%	1	0.06%
13 – 14%	1	0.06%
11 – 12%	2	0.13%
10 – 11%	1	0.06%
9 – 10%	1	0.06%
8 – 9%	5	0.32%
7 – 8%	2	0.13%
6 – 7%	7	0.45%
5 – 6%	5	0.32%
4 – 5%	13	0.84%
3 – 4%	41	2.65%
2 – 3%	95	6.14%
1 – 2%	213	13.78%
0 – 1%	400	25.87%
0%	61	3.95%
0 – -1%	345	22.32%
-1 – -2%	178	11.51%
-2 – -3%	88	5.69%
-3 – -4%	39	2.52%
-4 – -5%	13	0.84%
-5 – -6%	7	0.45%
-6 – -7%	9	0.58%
-7 – -8%	2	0.13%
-8 – -9%	4	0.26%
-9 – -10%	4	0.26%
-10 – -11%	3	0.19%
-11 – -12%	1	0.06%
-12 – -13%	2	0.13%
-15 – -16%	1	0.06%
-16 – -17%	1	0.06%

Table 2. Statistics of NUVA: 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 NUVA.

50.5% of the time (782 days), NUVA closed above the opening price. 45.5% of the time (704 days), it closed below the opening price. 3.9% of the time (61 days), it closed where it started.

Closing - Open (%)	Number of Days	% of Total Sessions
21 – 22%	1	0.06%
12 – 13%	1	0.06%
11 – 12%	1	0.06%
9 – 10%	1	0.06%
8 – 9%	1	0.06%
7 – 8%	1	0.06%
6 – 7%	3	0.19%
5 – 6%	6	0.39%
4 – 5%	14	0.90%
3 – 4%	45	2.91%
2 – 3%	76	4.91%
1 – 2%	233	15.06%
0 – 1%	399	25.79%
0%	61	3.94%
0 – -1%	354	22.88%
-1 – -2%	198	12.80%
-2 – -3%	83	5.37%
-3 – -4%	30	1.94%
-4 – -5%	17	1.10%
-5 – -6%	9	0.58%
-6 – -7%	4	0.26%
-7 – -8%	5	0.32%
-8 – -9%	2	0.13%
-13 – -14%	1	0.06%
-19 – -20%	1	0.06%

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

In the past 1,547 trading days, NUVA opened more than 5% higher than the previous day's closing price 8 times. Of these days, 25.0% (2 days) had closing prices above the opening price, and 75.0% (6 days) had closing prices below the opening price.

Closing - Open (%)	Number of Days	% of Total Sessions
1 – 2%	2	25.00%
0 – -1%	1	12.50%
-1 – -2%	1	12.50%
-4 – -5%	2	25.00%
-5 – -6%	1	12.50%
-19 – -20%	1	12.50%

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

On 7 days, NUVA opened 4–5% higher than the previous day's closing price. Of these days, 57.1% (4 days) had closing prices above the opening price, and 42.9% (3 days) had closing prices below the opening price.

Closing - Open (%)	Number of Days	% of Total Sessions
12 – 13%	1	14.29%
4 – 5%	1	14.29%
3 – 4%	1	14.29%
1 – 2%	1	14.29%
0 – -1%	2	28.57%
-1 – -2%	1	14.29%

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

10 times NUVA opened 3 – 4% higher than the previous day's closing price. Among these days, 60.0% (6 days) closed above the opening price, 40.0% (4 days) closed below the opening price.

Closing - Open (%)	Number of Days	% of Total Sessions
8 – 9%	1	10.00%
3 – 4%	2	20.00%
2 – 3%	2	20.00%
0 – 1%	1	10.00%
-1 – -2%	1	10.00%
-2 – -3%	1	10.00%
-3 – -4%	1	10.00%
-4 – -5%	1	10.00%

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

18 times NUVA opened 2 – 3% higher than the previous day's closing price. Among these days, 55.6% (10 days) closed above the opening price, 44.4% (8 days) closed below the opening price.

Closing - Open (%)	Number of Days	% of Total Sessions
6 – 7%	1	5.56%
5 – 6%	2	11.11%
4 – 5%	1	5.56%
3 – 4%	1	5.56%
2 – 3%	2	11.11%
0 – 1%	3	16.67%
0 – -1%	1	5.56%
-1 – -2%	2	11.11%
-2 – -3%	3	16.67%
-5 – -6%	1	5.56%
-7 – -8%	1	5.56%

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

59 times NUVA opened 1 – 2% higher than the previous day's closing price. Among these days, 45.8% (27 days) closed above the opening price, 54.2% (32 days) closed below the opening price.

Closing - Open (%)	Number of Days	% of Total Sessions
9 – 10%	1	1.69%
4 – 5%	1	1.69%
3 – 4%	2	3.39%
2 – 3%	2	3.39%
1 – 2%	5	8.47%
0 – 1%	16	27.12%
0 – -1%	9	15.25%
-1 – -2%	11	18.64%
-2 – -3%	4	6.78%
-3 – -4%	5	8.47%
-4 – -5%	2	3.39%
-7 – -8%	1	1.69%

Table 8. Periods when NUVA moved 15% or more

In this table, we track the price movements in the 20 days after NUVA 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
20200319	21.6%	-1.5	27.4	24.8	12.6	26.5	46.3	32.4
20200324	17.2%	8.0	5.8	-4.5	7.2	24.1	12.3	20.7
20200318	-15.8%	21.7	43.5	43.0	36.7	41.3	78.1	72.0
20200316	-16.4%	7.5	8.5	40.3	37.4	24.0	39.3	61.1

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

Of the 1,547 trading days from 2015 to 2020, there were 2 days in which NUVA was up more than 15%. This table shows the average price changes over the 2 days.

Average Type	Average Price Change
Days after:	1	4	7	10	13	16	19
Avg for Change ≥ 15%	3.3	16.6	10.1	9.9	25.3	29.3	26.6

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

Of the 1,547 trading days from 2015 to 2020, there were 2 days in which NUVA was down more than -15%. This table shows the average price changes over the 2 days.

Average Type	Average Price Change
Days after:	1	4	7	10	13	16	19
Avg for Change ≥ -15%	14.6	26.0	41.7	37.1	32.7	58.7	66.6

Table 9. Periods when NUVA moved 10% or more

In this table, we track the price movements in the 20 days after NUVA 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
20200319	21.6%	-1.5	27.4	24.8	12.6	26.5	46.3	32.4
20200324	17.2%	8.0	5.8	-4.5	7.2	24.1	12.3	20.7
20190211	13.2%	3.5	4.4	-1.2	3.5	5.0	4.5	3.5
20200417	11.6%	-3.3	-1.1	.4	-.5	-3.5	-1.0	-6.4
20180801	11.5%	-.1	-2.3	-.3	3.9	6.4	9.2	6.5
20190731	10.9%	1.7	-1.6	-.8	-4.5	-3.9	-1.9	-5.7
20161026	-10%	-1.4	-1.0	-.9	2.0	2.7	9.1	7.0
20181031	-10.1%	1.9	.4	3.1	5.4	9.2	12.6	11.8
20200309	-10.1%	1.7	-17.9	-38.0	-24.1	-5.3	-4.3	-17.8
20200401	-11.4%	.3	12.6	30.3	17.9	26.8	29.7	31.7
20170728	-12.7%	-2.0	-5.3	-4.9	-.7	.7	-3.9	-7.1
20200312	-12.9%	1.0	-23.7	-6.6	16.6	17.8	1.2	25.6
20200318	-15.8%	21.7	43.5	43.0	36.7	41.3	78.1	72.0
20200316	-16.4%	7.5	8.5	40.3	37.4	24.0	39.3	61.1

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

Of the 1,547 trading days from 2015 to 2020, there were 6 days in which NUVA was up more than 10%. 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 ≥ 10%	1.4	5.4	3.1	3.7	9.1	11.6	8.5

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

Of the 1,547 trading days from 2015 to 2020, there were 8 days in which NUVA was down more than -10%. This table shows the average price changes over the 8 days.

Average Type	Average Price Change
Days after:	1	4	7	10	13	16	19
Avg for Change ≥ -10%	3.8	2.1	8.3	11.4	14.7	20.2	23.0

Table 10. Periods when NUVA moved 5% or more

In this table, we track the price movements in the 20 days after NUVA 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
20200319	21.6%	-1.5	27.4	24.8	12.6	26.5	46.3	32.4
20200324	17.2%	8.0	5.8	-4.5	7.2	24.1	12.3	20.7
20190211	13.2%	3.5	4.4	-1.2	3.5	5.0	4.5	3.5
20200417	11.6%	-3.3	-1.1	.4	-.5	-3.5	-1.0	-6.4
20180801	11.5%	-.1	-2.3	-.3	3.9	6.4	9.2	6.5
20190731	10.9%	1.7	-1.6	-.8	-4.5	-3.9	-1.9	-5.7
20200518	9.3%	-1.8	.5	1.7	-1.6	-1.7	4.7	-7.2
20200407	8.8%	6.9	9.4	4.3	10.4	17.3	23.6	12.9
20171025	8.3%	-1.1	-4.1	-3.6	-4.8	-4.5	-4.2	-5.4
20150729	8.1%	.6	1.8	-.5	-3.5	-1.4	-3.7	-7.0
20200409	8.1%	.0	-9.5	-2.7	-.4	1.1	.2	-2.8
20200325	8%	-1.5	-.5	-14.5	6.2	8.5	3.6	9.5
20200605	7.6%	.7	-13.4	-9.5	-12.3	-17.0	-17.8	-13.7
20200317	7.5%	-15.8	3.0	28.5	29.9	11.6	38.5	41.6
20200408	6.9%	8.2	4.5	8.9	4.2	13.0	12.7	8.2
20200406	6.6%	8.9	26.0	14.0	22.6	25.5	27.4	26.2
20200715	6.5%	-3.0	-2.0	-2.1	1.1	-6.8	-11.9	-10.1
20201007	6.4%	2.8	1.4	2.5	-1.4	-2.4	-5.6	-9.2
20200330	6.2%	1.6	-12.7	8.4	10.8	5.7	11.8	18.9
20191031	6.1%	.1	1.4	2.2	2.1	2.8	.8	2.9
20180730	6%	1.5	11.7	10.0	14.9	20.0	21.0	22.3
20200429	5.6%	-2.5	-6.4	-2.6	-13.0	.1	2.0	4.0
20200508	5.5%	-4.2	-9.4	1.0	3.4	4.5	1.2	1.0
20160427	5.3%	-2.4	-4.2	-3.3	-2.3	-1.8	-2.3	-.5
20200629	5.3%	2.4	5.0	.1	.8	6.8	7.9	7.8
20201109	5.2%	.6	.6	-.4	-.4	.4	-1.9	2.5
20200306	-5.1%	-10.2	-27.0	-33.8	-33.2	-13.6	-15.4	-23.7
20151203	-5.3%	3.2	.6	1.3	4.3	7.4	7.5	10.3
20200512	-5.3%	-1.5	13.3	15.5	17.7	9.9	13.8	20.8
20200413	-5.4%	2.2	6.5	1.9	10.5	10.2	5.8	10.0
20201013	-5.7%	1.0	-1.0	-2.3	-6.2	-16.0	-9.9	-10.0
20171011	-5.8%	1.0	6.2	8.8	17.0	12.8	10.9	10.6
20190312	-5.8%	1.1	-.5	2.5	3.6	2.7	.7	3.6
20200303	-6%	4.1	-14.1	-30.2	-36.7	-36.2	-17.5	-19.1
20200624	-6%	-3.4	1.5	4.0	-.8	-.2	5.8	6.9
20150225	-6.1%	-1.1	-2.7	-1.3	-1.1	2.0	2.6	-.0
20200918	-6.2%	-.2	-1.3	-4.3	-2.1	5.2	13.2	7.2
20200327	-6.3%	6.2	-4.2	7.6	24.5	12.7	21.2	24.0
20200415	-6.3%	-.4	5.4	12.0	18.0	7.8	8.9	4.2
20160212	-6.4%	.0	-.5	-.1	6.8	7.4	11.9	15.4
20151022	-6.7%	4.0	4.7	9.0	13.7	15.2	11.9	14.7
20160205	-6.7%	-1.0	.9	-3.5	-6.0	-2.8	.8	4.4
20150402	-7%	.0	1.6	6.8	.8	2.1	3.8	7.4
20170919	-7.3%	.2	2.8	2.7	1.7	6.4	-5.5	-2.5
20200311	-8.1%	-13.0	-21.1	-20.4	3.0	.9	-9.0	2.2
20150928	-8.4%	-1.6	6.6	10.1	8.8	4.7	5.2	-.5
20200611	-8.4%	1.4	4.4	-1.4	-7.4	-2.7	-.2	-4.9
20180108	-8.9%	-4.1	-4.0	-9.5	-5.9	-7.8	-10.1	-11.6
20181019	-9%	2.5	1.5	.7	-8.9	-6.1	-7.4	-2.5
20190107	-9.1%	-2.0	.2	.6	5.7	7.4	6.7	8.1
20180502	-9.3%	2.9	2.4	3.0	3.7	2.8	3.8	4.1
20201030	-9.8%	1.3	3.7	2.6	4.6	8.1	7.1	5.6
20161026	-10%	-1.4	-1.0	-.9	2.0	2.7	9.1	7.0
20181031	-10.1%	1.9	.4	3.1	5.4	9.2	12.6	11.8
20200309	-10.1%	1.7	-17.9	-38.0	-24.1	-5.3	-4.3	-17.8
20200401	-11.4%	.3	12.6	30.3	17.9	26.8	29.7	31.7
20170728	-12.7%	-2.0	-5.3	-4.9	-.7	.7	-3.9	-7.1
20200312	-12.9%	1.0	-23.7	-6.6	16.6	17.8	1.2	25.6
20200318	-15.8%	21.7	43.5	43.0	36.7	41.3	78.1	72.0
20200316	-16.4%	7.5	8.5	40.3	37.4	24.0	39.3	61.1

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

Of the 1,547 trading days from 2015 to 2020, there were 26 days in which NUVA was up more than 5%. This table shows the average price changes over the 26 days.

Average Type	Average Price Change
Days after:	1	4	7	10	13	16	19
Avg for Change ≥ 5%	.4	1.4	2.3	3.4	5.2	6.8	5.9

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

Of the 1,547 trading days from 2015 to 2020, there were 34 days in which NUVA was down more than -5%. This table shows the average price changes over the 34 days.

Average Type	Average Price Change
Days after:	1	4	7	10	13	16	19
Avg for Change ≥ -5%	.7	.1	1.4	3.7	4.6	6.7	7.9

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Also see: VIX price movement study.