COR Options History — August 2025

In August 2025, COR traded between $276.83 and $303.86. ATM implied volatility averaged 25.3%, placing in the 35.4% IV rank vs the trailing year. The 30-day expected move averaged 6.7%. IV traded above realized volatility by 1.3% (HV 20d: 24.0%). Max pain ranged from $260.00 to $290.00. Net GEX was positive for 21 of 21 trading days. Term structure was in contango for 10 of 21 days. Put/call ratio averaged 1.49.

Notable Days

2025-08-07: Highest Volume — 7,863 contracts
2025-08-06: Largest IV drop — 44.6% change
2025-08-04: Highest IV Rank — 96.2%
2025-08-01: Largest Expected Move — 10.5%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$291.08	$276.83	$303.86	$287.98	$290.98
Max Pain	$280.00	$260.00	$290.00	$280.00	$280.00
ATM IV	25.3%	19.9%	43.7%	36.7%	22.8%
Expected Move	6.7%	5.9%	10.5%	10.5%	6.5%
HV 20d	24.0%	13.8%	31.1%	14.1%	30.3%
HV 60d	19.4%	15.8%	22.6%	22.6%	21.5%
IV Rank	35.4%	18.9%	96.2%	73.4%	26.4%
IV Percentile	57.5%	23.0%	99.6%	97.6%	52.8%
Term Structure	-0.4%	-9.2%	2.9%	-9.2%	-0.5%
VWIV	23.3%	19.5%	32.9%	32.9%	22.9%
Skew 25d	3.1%	1.9%	7.1%	7.1%	2.4%
Skew 10d	8.1%	3.8%	16.7%	16.7%	5.1%
Call IV 25d	21.6%	19.8%	33.4%	33.4%	21.4%
Put IV 25d	24.7%	22.4%	40.6%	40.6%	23.8%
Bid-Ask Spread %	86.05	76.93	90.75	85.59	90.75
Gamma HHI	0.17	0.13	0.33	0.14	0.17
Net GEX	5.0M	1.1M	12.1M	4.4M	4.8M
Net DEX	-320.8M	-401.7M	-211.8M	-303.6M	-321.0M
Net VEX	-1.1M	-1.2M	-1.0M	-1.2M	-1.1M
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	1.49	0.03	10.64	1.29	0.09
Total Volume	1,914.571	159	7,863	374	973
Total OI	42,420.762	40,308	45,883	40,464	41,194

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
2025-08-01	$287.98	$280.00	36.7%	10.5%	14.1%	73.4%	32.9%	7.1%	-9.2%	4.4M	-303.6M	-1.2M	1.29	85.59	N/A	N/A	163	211	20,782	19,682
2025-08-04	$293.05	$260.00	43.7%	7.9%	13.9%	96.2%	26.9%	3.0%	-2.1%	5.3M	-337.4M	-1.2M	0.20	76.93	N/A	N/A	613	121	20,863	19,782
2025-08-05	$291.53	$260.00	41.8%	8.1%	13.8%	90.2%	27.4%	3.0%	-1.6%	5.6M	-333.3M	-1.2M	0.91	78.77	N/A	N/A	3,956	3,619	21,359	19,845
2025-08-06	$284.84	$280.00	23.2%	6.4%	15.7%	29.5%	21.6%	2.4%	1.2%	4.0M	-282.2M	-1.2M	0.12	82.42	N/A	N/A	2,468	284	22,409	20,717
2025-08-07	$276.83	$280.00	23.5%	6.2%	18.1%	30.7%	22.1%	2.5%	1.6%	1.1M	-211.8M	-1.2M	2.06	84.40	N/A	N/A	2,572	5,291	22,501	20,821
2025-08-08	$285.68	$280.00	19.9%	5.9%	21.9%	18.9%	22.1%	3.0%	1.8%	4.0M	-291.8M	-1.2M	1.33	86.25	N/A	N/A	152	202	22,970	21,369
2025-08-11	$290.91	$280.00	26.5%	6.2%	22.9%	40.4%	23.5%	2.5%	1.5%	5.8M	-330.9M	-1.2M	6.24	85.83	N/A	N/A	520	3,243	23,049	21,538
2025-08-12	$289.00	$280.00	26.8%	5.9%	22.9%	41.3%	22.2%	1.9%	2.9%	5.1M	-312.9M	-1.2M	0.06	86.43	N/A	N/A	1,453	85	23,110	21,612
2025-08-13	$289.59	$280.00	20.7%	5.9%	22.6%	21.5%	20.9%	2.6%	1.9%	8.4M	-325.1M	-1.2M	0.34	84.55	N/A	N/A	178	60	24,242	21,641
2025-08-14	$297.09	$280.00	21.4%	6.1%	24.2%	22.1%	22.5%	3.3%	0.1%	12.1M	-393.0M	-1.1M	0.03	87.27	N/A	N/A	3,446	91	24,202	21,656
2025-08-15	$293.91	$280.00	22.5%	6.4%	24.5%	25.9%	22.3%	3.2%	-1.2%	4.9M	-337.9M	-1.1M	0.25	87.45	N/A	N/A	255	64	22,730	21,671
2025-08-18	$290.57	$280.00	21.8%	6.2%	24.8%	23.4%	22.3%	3.1%	0.4%	4.3M	-315.4M	-1.1M	0.81	85.42	N/A	N/A	698	567	20,884	19,424
2025-08-19	$293.42	$280.00	23.2%	6.7%	25.1%	28.2%	23.5%	3.0%	-0.9%	4.8M	-330.2M	-1.1M	0.76	84.92	N/A	N/A	270	205	20,943	19,932
2025-08-20	$303.25	$280.00	22.4%	6.4%	27.7%	25.4%	24.3%	3.1%	-0.5%	7.6M	-401.7M	-1.0M	10.64	85.53	N/A	N/A	256	2,723	21,012	20,104
2025-08-21	$303.86	$290.00	24.1%	6.9%	27.5%	31.0%	23.8%	3.1%	-1.4%	6.9M	-396.9M	-1.1M	1.05	86.59	N/A	N/A	87	91	21,156	20,405
2025-08-22	$292.24	$290.00	23.5%	6.7%	31.1%	28.9%	22.6%	3.1%	-2.7%	3.6M	-315.9M	-1.1M	1.82	89.44	N/A	N/A	78	142	21,202	20,421
2025-08-25	$288.18	$290.00	21.8%	6.3%	31.0%	23.2%	22.1%	3.9%	0.4%	1.7M	-278.3M	-1.1M	0.28	89.96	N/A	N/A	592	164	21,234	20,535
2025-08-26	$289.02	$290.00	21.4%	6.1%	30.7%	21.9%	21.8%	2.9%	0.2%	1.9M	-288.6M	-1.1M	2.72	88.18	N/A	N/A	970	2,638	21,409	20,676
2025-08-27	$290.94	$280.00	21.8%	6.3%	30.8%	23.2%	21.3%	2.8%	-0.7%	4.3M	-317.2M	-1.1M	0.23	90.44	N/A	N/A	129	30	20,999	19,837
2025-08-28	$289.84	$280.00	21.4%	6.1%	30.3%	21.9%	19.5%	2.9%	-0.4%	4.2M	-311.2M	-1.1M	0.15	89.91	N/A	N/A	475	71	21,071	19,847
2025-08-29	$290.98	$280.00	22.8%	6.5%	30.3%	26.4%	22.9%	2.4%	-0.5%	4.8M	-321.0M	-1.1M	0.09	90.75	N/A	N/A	892	81	21,333	19,861