GPK Options History — April 2026

In April 2026, GPK traded between $9.46 and $9.91. ATM implied volatility averaged 55.5%, placing in the 54.2% IV rank vs the trailing year. The 30-day expected move averaged 15.9%. IV traded above realized volatility by 8.8% (HV 20d: 46.7%). Max pain ranged from $10.00 to $10.00. Net GEX was positive for 14 of 14 trading days. Term structure was in contango for 4 of 14 days. Put/call ratio averaged 2.13.

Notable Days

2026-04-20: Highest Volume — 625 contracts
2026-04-06: Largest IV spike — 4540.0% change
2026-04-07: Highest IV Rank — 100.0%
2026-04-21: Largest Expected Move — 32.1%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$9.69	$9.46	$9.91	$9.59	$9.72
Max Pain	$10.00	$10.00	$10.00	$10.00	$10.00
ATM IV	55.5%	1.0%	111.9%	1.0%	111.9%
Expected Move	15.9%	0.3%	32.1%	0.3%	32.1%
HV 20d	46.7%	34.7%	51.3%	51.0%	34.7%
HV 60d	60.6%	60.0%	61.2%	61.1%	60.2%
IV Rank	54.2%	0.0%	100.0%	0.0%	100.0%
IV Percentile	82.5%	0.0%	100.0%	0.0%	100.0%
Term Structure	-4.7%	-59.0%	53.4%	53.4%	-59.0%
VWIV	54.3%	50.5%	59.9%	50.5%	56.1%
Skew 25d	9.9%	-9.2%	20.1%	0.7%	-5.0%
Skew 10d	16.1%	-12.8%	32.1%	1.5%	-6.1%
Call IV 25d	49.2%	40.7%	68.1%	49.2%	49.1%
Put IV 25d	59.1%	44.1%	67.6%	50.0%	44.1%
Bid-Ask Spread %	30.89	21.79	44.34	21.79	23.32
Gamma HHI	0.23	0.21	0.25	0.22	0.23
Net GEX	65.9K	61.2K	76.2K	61.6K	69.0K
Net DEX	-2.0M	-2.4M	-1.7M	-1.7M	-2.3M
Net VEX	-23.6K	-25.6K	-21.6K	-24.8K	-23.3K
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	2.13	0.02	22.29	0.29	0.89
Total Volume	235.5	16	625	455	372
Total OI	19,158.143	18,479	19,558	18,762	19,078

Daily Data (14 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
2026-04-01	$9.59	$10.00	1.0%	0.3%	51.0%	0.0%	50.5%	0.7%	53.4%	61.6K	-1.7M	-24.8K	0.29	21.79	352	103	15,192	3,570
2026-04-02	$9.68	$10.00	1.0%	0.3%	51.3%	0.0%	59.9%	-9.2%	-4.4%	62.9K	-1.7M	-24.2K	0.23	43.91	75	17	15,443	3,621
2026-04-06	$9.71	$10.00	46.4%	13.3%	51.0%	59.6%	56.5%	4.2%	0.3%	65.2K	-1.8M	-24.8K	0.12	36.22	163	19	15,503	3,633
2026-04-07	$9.59	$10.00	102.2%	29.3%	49.3%	100.0%	58.6%	2.8%	0.1%	64.0K	-2.0M	-24.2K	1.70	36.75	61	104	15,608	3,282
2026-04-08	$9.46	$10.00	51.6%	14.8%	48.8%	50.0%	51.4%	16.8%	1.8%	61.2K	-1.9M	-24.1K	2.58	34.84	24	62	15,647	3,391
2026-04-09	$9.63	$10.00	54.3%	15.6%	49.1%	52.7%	53.8%	19.6%	-2.3%	61.5K	-1.8M	-21.6K	22.29	33.89	7	156	15,667	3,449
2026-04-10	$9.61	$10.00	52.2%	15.0%	45.6%	50.6%	51.2%	17.8%	-1.7%	65.3K	-1.9M	-23.7K	0.21	30.29	71	15	15,674	3,599
2026-04-13	$9.91	$10.00	56.1%	16.1%	46.9%	54.4%	54.2%	9.4%	-5.8%	76.2K	-2.4M	-25.6K	0.41	44.34	184	75	15,739	3,595
2026-04-14	$9.73	$10.00	53.6%	15.4%	47.1%	52.0%	52.7%	19.5%	-3.3%	74.5K	-1.9M	-23.6K	0.10	31.97	171	17	15,857	3,596
2026-04-15	$9.70	$10.00	54.4%	15.6%	47.0%	52.8%	53.5%	19.1%	-4.4%	70.4K	-1.9M	-22.8K	0.78	24.46	9	7	15,915	3,600
2026-04-16	$9.61	$10.00	52.8%	15.1%	46.4%	51.2%	0.0%	15.3%	-1.2%	64.3K	-1.9M	-22.5K	0.04	24.43	51	2	15,915	3,603
2026-04-17	$9.86	$10.00	55.0%	15.8%	45.9%	53.4%	53.4%	20.1%	-6.6%	61.6K	-1.9M	-22.9K	0.02	24.28	546	9	15,956	3,602
2026-04-20	$9.86	$10.00	84.9%	24.3%	40.1%	82.9%	54.1%	7.3%	-33.3%	65.5K	-2.3M	-22.4K	0.11	21.94	561	64	15,346	3,133
2026-04-21	$9.72	$10.00	111.9%	32.1%	34.7%	100.0%	56.1%	-5.0%	-59.0%	69.0K	-2.3M	-23.3K	0.89	23.32	197	175	15,880	3,198