CSGS Options History — September 2025

In September 2025, CSGS traded between $63.63 and $66.81. ATM implied volatility averaged 35.4%, placing in the 17.2% IV rank vs the trailing year. The 30-day expected move averaged 8.9%. IV traded above realized volatility by 13.7% (HV 20d: 21.7%). Max pain ranged from $50.00 to $65.00. Net GEX was positive for 21 of 21 trading days. Term structure was in contango for 8 of 21 days. Put/call ratio averaged 0.02.

Notable Days

2025-09-08: Highest Volume — 8 contracts
2025-09-10: Largest IV drop — 52.5% change
2025-09-09: Highest IV Rank — 35.7%
2025-09-03: Largest Expected Move — 12.4%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$65.11	$63.63	$66.81	$64.25	$63.98
Max Pain	$59.00	$50.00	$65.00	$50.00	$65.00
ATM IV	35.4%	26.5%	55.8%	39.0%	40.5%
Expected Move	8.9%	7.1%	12.4%	11.2%	11.6%
HV 20d	21.7%	20.1%	24.1%	23.9%	20.4%
HV 60d	23.3%	22.8%	24.0%	23.4%	22.8%
IV Rank	17.2%	9.1%	35.7%	20.5%	21.8%
IV Percentile	24.3%	2.4%	79.8%	30.6%	38.1%
Term Structure	-3.9%	-23.4%	5.5%	-19.1%	-15.5%
VWIV	35.9%	29.9%	41.9%	29.9%	41.9%
Skew 25d	10.1%	-13.0%	28.8%	24.5%	-13.0%
Skew 10d	14.0%	-5.9%	32.8%	9.7%	32.8%
Call IV 25d	27.1%	21.0%	41.1%	33.3%	34.8%
Put IV 25d	37.2%	21.8%	58.3%	57.8%	21.8%
Bid-Ask Spread %	118.40	110.87	124.46	121.29	113.41
Gamma HHI	0.70	0.53	0.89	0.58	0.68
Net GEX	11.1K	9.3K	14.0K	9.7K	9.3K
Net DEX	-187.7K	-250.1K	-133.3K	-182.5K	-141.9K
Net VEX	-720	-826	-602	-608	-781
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	0.02	0.00	0.25	0.00	0.00
Total Volume	1.857	0	8	1	1
Total OI	79	61	92	77	69

Daily Data (21 trading days)

Date	Price	Max Pain	ATM IV	Exp Move	HV 20d	IV Rank	VWIV	Skew 25d	Term Str	GEX	DEX	VEX	P/C	Spread %	Call Wall	Put Wall	Call Vol	Put Vol	Call OI	Put OI
2025-09-02	$64.25	$50.00	39.0%	11.2%	23.9%	20.5%	0.0%	24.5%	-19.1%	9.7K	-182.5K	-608	0.00	121.29	N/A	N/A	1	0	72	5
2025-09-03	$65.03	$50.00	43.4%	12.4%	24.1%	24.4%	0.0%	28.8%	-23.4%	10.7K	-199.0K	-630	0.00	122.63	N/A	N/A	0	0	73	5
2025-09-04	$64.29	$0.00	45.9%	7.1%	23.8%	26.7%	0.0%	4.4%	-3.5%	9.9K	-202.1K	-671	0.00	121.47	N/A	N/A	0	0	73	5
2025-09-05	$64.68	$0.00	47.4%	7.1%	23.8%	28.1%	0.0%	14.0%	-5.3%	10.6K	-190.2K	-602	0.00	124.07	N/A	N/A	5	0	73	5
2025-09-08	$65.32	$0.00	45.5%	7.4%	22.6%	26.3%	0.0%	15.5%	2.6%	11.8K	-218.8K	-703	0.00	121.87	N/A	N/A	8	0	78	5
2025-09-09	$65.38	$0.00	55.8%	7.5%	21.3%	35.7%	0.0%	16.6%	1.0%	13.3K	-232.6K	-789	0.00	124.03	N/A	N/A	0	0	86	5
2025-09-10	$63.63	$0.00	26.5%	7.6%	22.4%	9.1%	0.0%	13.9%	-6.0%	10.5K	-189.9K	-664	0.00	118.11	N/A	N/A	2	0	86	5
2025-09-11	$65.64	$0.00	26.6%	7.6%	22.7%	9.3%	0.0%	1.2%	3.7%	13.5K	-250.1K	-825	0.00	124.46	N/A	N/A	4	0	87	5
2025-09-12	$64.98	$0.00	27.2%	7.8%	21.6%	9.8%	0.0%	17.0%	1.4%	12.7K	-225.7K	-748	0.00	118.74	N/A	N/A	0	0	83	5
2025-09-15	$64.77	$0.00	28.5%	8.2%	21.2%	10.9%	0.0%	-1.6%	-3.0%	12.6K	-213.6K	-695	0.00	115.11	N/A	N/A	0	0	83	5
2025-09-16	$64.73	$0.00	28.9%	8.3%	21.2%	11.3%	0.0%	18.1%	-3.4%	12.4K	-207.1K	-673	0.00	118.43	N/A	N/A	0	0	83	5
2025-09-17	$65.60	$0.00	28.8%	8.3%	21.5%	11.3%	0.0%	8.2%	-2.7%	14.0K	-221.7K	-673	0.00	117.58	N/A	N/A	0	0	83	5
2025-09-18	$66.81	$0.00	28.3%	8.1%	21.8%	10.8%	0.0%	12.3%	5.5%	9.7K	-238.2K	-682	0.00	113.13	N/A	N/A	1	0	83	5
2025-09-19	$66.16	$0.00	29.8%	8.5%	22.0%	12.1%	0.0%	10.8%	1.9%	10.3K	-174.5K	-675	0.25	112.73	N/A	N/A	4	1	74	5
2025-09-22	$66.18	$0.00	31.5%	9.0%	20.1%	13.7%	0.0%	7.2%	3.5%	10.4K	-147.3K	-771	0.00	114.62	N/A	N/A	7	0	57	4
2025-09-23	$65.73	$0.00	32.4%	9.3%	20.4%	14.5%	0.0%	24.6%	1.3%	10.4K	-154.2K	-826	0.00	110.87	N/A	N/A	0	0	64	4
2025-09-24	$65.50	$0.00	33.2%	9.5%	20.4%	15.2%	0.0%	19.7%	-1.0%	10.4K	-145.2K	-805	0.00	115.07	N/A	N/A	0	0	64	4
2025-09-25	$64.94	$0.00	32.0%	9.2%	20.4%	14.1%	29.9%	-1.8%	-5.9%	10.0K	-133.3K	-771	0.00	118.41	N/A	N/A	4	0	64	4
2025-09-26	$65.12	$65.00	34.9%	10.0%	20.2%	16.8%	0.0%	-1.5%	-4.1%	11.1K	-136.2K	-773	0.00	117.92	N/A	N/A	0	0	65	4
2025-09-29	$64.66	$65.00	37.9%	10.9%	20.1%	19.4%	0.0%	-6.5%	-10.1%	10.6K	-136.6K	-750	0.00	122.45	N/A	N/A	1	0	65	4
2025-09-30	$63.98	$65.00	40.5%	11.6%	20.4%	21.8%	41.9%	-13.0%	-15.5%	9.3K	-141.9K	-781	0.00	113.41	N/A	N/A	1	0	65	4