CALX Options History — February 2025

In February 2025, CALX traded between $36.50 and $41.94. ATM implied volatility averaged 39.8%, placing in the 25.9% IV rank vs the trailing year. The 30-day expected move averaged 11.4%. IV traded below realized volatility by 7.9% (HV 20d: 47.7%). Max pain ranged from $37.50 to $40.00. Net GEX was positive for 19 of 19 trading days. Term structure was in contango for 17 of 19 days. Put/call ratio averaged 0.81.

Notable Days

2025-02-03: Highest Volume — 320 contracts
2025-02-21: Largest IV spike — 7.4% change
2025-02-26: Highest IV Rank — 31.8%
2025-02-26: Largest Expected Move — 12.7%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$39.75	$36.50	$41.94	$39.28	$36.50
Max Pain	$38.82	$37.50	$40.00	$40.00	$37.50
ATM IV	39.8%	37.3%	44.2%	41.3%	42.5%
Expected Move	11.4%	10.7%	12.7%	11.9%	12.2%
HV 20d	47.7%	28.4%	56.0%	56.0%	28.4%
HV 60d	46.8%	40.9%	51.3%	51.2%	41.4%
IV Rank	25.9%	22.4%	31.8%	27.9%	29.5%
IV Percentile	48.4%	32.9%	69.0%	56.0%	60.7%
Term Structure	1.2%	-2.1%	3.7%	0.6%	0.7%
VWIV	39.5%	35.9%	43.5%	42.4%	42.7%
Skew 25d	0.8%	-15.0%	17.2%	17.2%	2.7%
Skew 10d	4.5%	-12.4%	21.5%	4.7%	5.5%
Call IV 25d	37.9%	25.9%	43.3%	25.9%	42.1%
Put IV 25d	38.7%	23.8%	46.7%	43.2%	44.8%
Bid-Ask Spread %	72.98	56.51	86.54	86.54	80.64
Gamma HHI	0.25	0.18	0.33	0.24	0.18
Net GEX	186.2K	72.3K	319.0K	165.5K	72.3K
Net DEX	-3.5M	-5.4M	-1.5M	-3.4M	-1.5M
Net VEX	-14.3K	-17.6K	-10.2K	-15.7K	-10.2K
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	0.81	0.00	5.00	1.71	0.94
Total Volume	82.263	4	320	320	180
Total OI	3,401.053	2,642	3,968	3,113	2,692

Daily Data (19 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
2025-02-03	$39.28	$40.00	41.3%	11.9%	56.0%	27.9%	42.4%	17.2%	0.6%	165.5K	-3.4M	-15.7K	1.71	86.54	118	202	2,606	507
2025-02-04	$40.69	$40.00	40.9%	11.7%	55.3%	27.3%	37.1%	-6.6%	-1.4%	211.8K	-4.2M	-16.7K	0.08	64.95	91	7	2,689	617
2025-02-05	$41.94	$40.00	38.2%	10.9%	55.6%	23.6%	35.9%	2.1%	0.9%	264.4K	-5.4M	-17.6K	0.00	85.52	122	0	2,787	617
2025-02-06	$41.45	$40.00	37.6%	10.9%	55.9%	22.9%	37.9%	3.0%	1.3%	275.7K	-4.9M	-17.4K	0.31	56.51	36	11	2,909	617
2025-02-07	$41.31	$40.00	38.3%	11.1%	52.3%	23.8%	38.3%	1.7%	1.0%	264.0K	-4.8M	-17.3K	0.91	72.70	54	49	2,921	622
2025-02-10	$41.81	$40.00	38.4%	11.1%	45.7%	23.9%	39.5%	-10.5%	2.4%	296.5K	-5.2M	-17.4K	0.02	65.09	89	2	2,990	654
2025-02-11	$41.66	$40.00	37.5%	10.9%	45.8%	22.7%	36.6%	4.4%	1.1%	319.0K	-5.1M	-16.7K	0.00	73.83	14	0	3,107	654
2025-02-12	$40.37	$40.00	39.7%	11.4%	47.7%	25.7%	39.4%	-15.0%	0.9%	229.4K	-3.9M	-15.6K	0.00	83.02	51	0	3,113	654
2025-02-13	$40.58	$40.00	38.9%	11.1%	47.2%	24.6%	36.4%	-11.0%	0.8%	241.9K	-4.0M	-15.4K	0.32	79.51	25	8	3,144	654
2025-02-14	$39.69	$40.00	38.8%	11.1%	47.9%	24.5%	39.2%	-2.0%	1.1%	186.3K	-3.2M	-14.5K	0.33	75.50	3	1	3,169	662
2025-02-18	$39.69	$37.50	39.1%	11.2%	47.8%	24.8%	38.3%	-0.3%	2.2%	163.9K	-3.0M	-13.4K	0.23	79.09	44	10	3,170	662
2025-02-19	$40.04	$37.50	38.8%	11.1%	47.8%	24.5%	40.1%	3.5%	3.0%	166.9K	-3.2M	-13.1K	0.14	59.79	21	3	3,208	668
2025-02-20	$39.62	$37.50	37.3%	10.7%	47.6%	22.4%	38.5%	0.7%	2.4%	143.8K	-2.9M	-12.8K	0.37	67.84	68	25	3,216	671
2025-02-21	$38.77	$37.50	40.1%	11.5%	47.6%	26.2%	40.6%	4.0%	3.7%	120.1K	-2.3M	-12.3K	0.94	81.21	51	48	3,309	659
2025-02-24	$38.30	$37.50	41.3%	11.8%	47.6%	27.8%	41.6%	12.8%	0.2%	111.7K	-2.3M	-11.9K	0.03	68.80	167	5	2,205	462
2025-02-25	$37.91	$37.50	42.4%	12.2%	43.3%	29.3%	43.5%	1.2%	0.0%	104.7K	-2.2M	-11.5K	0.05	68.84	40	2	2,176	466
2025-02-26	$38.27	$37.50	44.2%	12.7%	43.2%	31.8%	43.4%	3.5%	-2.1%	110.2K	-2.2M	-11.6K	4.00	58.13	2	8	2,211	466
2025-02-27	$37.32	$37.50	41.9%	12.0%	43.8%	28.7%	0.0%	3.6%	3.0%	90.6K	-1.9M	-11.1K	5.00	79.13	1	5	2,213	473
2025-02-28	$36.50	$37.50	42.5%	12.2%	28.4%	29.5%	42.7%	2.7%	0.7%	72.3K	-1.5M	-10.2K	0.94	80.64	93	87	2,214	478