CBU Options History — August 2025

In August 2025, CBU traded between $51.54 and $61.21. ATM implied volatility averaged 47.8%, placing in the 31.2% IV rank vs the trailing year. The 30-day expected move averaged 9.4%. IV traded above realized volatility by 18.1% (HV 20d: 29.8%). Max pain ranged from $55.00 to $60.00. Net GEX was positive for 20 of 21 trading days. Term structure was in contango for 1 of 21 days. Put/call ratio averaged 1.13.

Notable Days

2025-08-14: Highest Volume — 24 contracts
2025-08-05: Largest IV spike — 90.1% change
2025-08-12: Highest IV Rank — 97.3%
2025-08-26: Largest Expected Move — 11.5%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$57.06	$51.54	$61.21	$51.54	$60.00
Max Pain	$59.76	$55.00	$60.00	$55.00	$60.00
ATM IV	47.8%	25.2%	111.1%	35.4%	35.7%
Expected Move	9.4%	7.2%	11.5%	10.2%	10.2%
HV 20d	29.8%	24.5%	33.7%	24.5%	31.3%
HV 60d	27.1%	23.9%	29.4%	25.3%	29.1%
IV Rank	31.2%	7.2%	97.3%	18.0%	18.7%
IV Percentile	44.6%	5.2%	99.6%	28.2%	29.4%
Term Structure	-5.8%	-14.5%	0.1%	-14.5%	-4.7%
VWIV	33.3%	27.2%	41.1%	35.4%	41.1%
Skew 25d	-2.3%	-51.8%	17.1%	-51.8%	17.1%
Skew 10d	-8.6%	-61.5%	36.7%	-61.5%	20.2%
Call IV 25d	36.4%	25.4%	75.8%	75.8%	35.9%
Put IV 25d	34.1%	21.8%	53.0%	24.0%	53.0%
Bid-Ask Spread %	114.77	90.36	125.19	122.52	107.56
Gamma HHI	0.54	0.35	0.62	0.36	0.59
Net GEX	7.3K	-243	16.5K	946	6.8K
Net DEX	-89.7K	-230.1K	111.3K	111.3K	-184.0K
Net VEX	-1.0K	-1.3K	-662	-662	-1.3K
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	1.13	0.00	7.00	7.00	0.00
Total Volume	4.19	0	24	8	0
Total OI	398.429	360	444	402	385

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 Vol	Put Vol	Call OI	Put OI
2025-08-01	$51.54	$55.00	35.4%	10.2%	24.5%	18.0%	35.4%	-51.8%	-14.5%	946	111.3K	-662	7.00	122.52	1	7	115	287
2025-08-04	$52.37	$60.00	35.6%	10.4%	25.4%	18.1%	0.0%	-2.5%	-8.1%	-243	70.3K	-682	3.00	121.14	2	6	116	286
2025-08-05	$52.53	$60.00	67.7%	10.2%	25.0%	51.7%	0.0%	-14.2%	-8.7%	2.2K	75.9K	-792	0.25	121.93	4	1	117	292
2025-08-06	$53.08	$60.00	70.1%	9.8%	25.7%	54.3%	0.0%	-12.8%	-8.6%	4.6K	48.0K	-857	0.00	122.41	0	0	121	293
2025-08-07	$53.49	$60.00	74.4%	9.9%	25.9%	58.8%	0.0%	-11.1%	-7.6%	5.0K	46.8K	-826	0.00	121.37	0	0	121	293
2025-08-08	$54.17	$60.00	79.5%	9.5%	25.7%	64.1%	29.1%	13.5%	-6.6%	6.5K	24.9K	-831	0.00	125.19	13	0	121	293
2025-08-11	$56.36	$60.00	108.6%	8.0%	29.9%	94.7%	0.0%	1.1%	-3.8%	10.3K	-101.4K	-879	0.00	118.64	1	0	128	293
2025-08-12	$59.07	$60.00	111.1%	8.0%	32.3%	97.3%	0.0%	-1.2%	-4.8%	14.3K	-197.0K	-945	0.00	115.31	0	0	127	293
2025-08-13	$58.95	$60.00	28.0%	8.0%	32.3%	10.2%	30.5%	-0.2%	-6.6%	16.5K	-178.3K	-882	0.00	115.48	2	0	127	293
2025-08-14	$58.03	$60.00	28.1%	8.1%	30.7%	10.3%	0.0%	7.9%	-0.9%	12.7K	-160.9K	-849	0.00	116.95	24	0	127	293
2025-08-15	$56.53	$60.00	25.2%	7.2%	32.0%	7.2%	0.0%	6.2%	-2.9%	5.0K	-69.3K	-994	0.00	118.54	0	0	151	293
2025-08-18	$57.03	$60.00	26.1%	7.5%	31.9%	8.4%	27.2%	-0.8%	-3.8%	5.8K	-58.3K	-1.0K	0.07	90.36	15	1	72	288
2025-08-19	$56.92	$60.00	28.4%	8.1%	29.7%	10.9%	0.0%	-4.9%	-5.1%	7.0K	-92.2K	-1.2K	0.00	111.11	0	0	87	289
2025-08-20	$57.23	$60.00	32.4%	9.3%	29.6%	15.2%	0.0%	-2.0%	-4.1%	7.5K	-99.0K	-1.2K	0.00	111.71	0	0	87	289
2025-08-21	$57.26	$60.00	32.5%	9.3%	28.5%	15.2%	0.0%	-2.3%	-3.4%	7.5K	-100.8K	-1.2K	0.00	112.28	0	6	87	289
2025-08-22	$60.38	$60.00	33.5%	9.6%	33.7%	16.4%	0.0%	-19.7%	-4.7%	7.7K	-188.2K	-1.3K	0.00	113.58	0	0	87	295
2025-08-25	$60.79	$60.00	35.3%	10.1%	33.5%	18.3%	0.0%	14.1%	-2.4%	8.6K	-195.2K	-1.3K	0.00	113.07	0	0	87	295
2025-08-26	$60.89	$60.00	40.1%	11.5%	33.0%	23.4%	36.2%	0.5%	0.1%	7.9K	-212.7K	-1.3K	1.00	113.50	1	1	87	295
2025-08-27	$61.21	$60.00	39.4%	11.3%	32.7%	22.7%	41.1%	14.6%	-12.2%	7.9K	-230.1K	-1.3K	0.00	114.23	2	0	88	296
2025-08-28	$60.45	$60.00	37.8%	10.8%	32.4%	21.0%	0.0%	0.4%	-8.9%	8.4K	-194.1K	-1.3K	0.00	103.33	0	1	88	296
2025-08-29	$60.00	$60.00	35.7%	10.2%	31.3%	18.7%	0.0%	17.1%	-4.7%	6.8K	-184.0K	-1.3K	0.00	107.56	0	0	88	297