TSM Options History — October 2025

In October 2025, TSM traded between $282.67 and $305.65. ATM implied volatility averaged 42.6%, placing in the 30.2% IV rank vs the trailing year. The 30-day expected move averaged 12.4%. IV traded above realized volatility by 1.7% (HV 20d: 40.9%). Max pain ranged from $220.00 to $245.00. Net GEX was positive for 23 of 23 trading days. Term structure was in contango for 3 of 23 days. Put/call ratio averaged 0.79.

Notable Days

2025-10-16: Highest Volume — 361,897 contracts
2025-10-06: Largest IV spike — 9.7% change
2025-10-10: Highest IV Rank — 43.7%
2025-10-10: Largest Expected Move — 13.6%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$297.16	$282.67	$305.65	$288.76	$300.48
Max Pain	$230.22	$220.00	$245.00	$240.00	$240.00
ATM IV	42.6%	37.5%	48.7%	41.9%	38.9%
Expected Move	12.4%	10.8%	13.6%	12.8%	11.4%
HV 20d	40.9%	25.7%	48.6%	27.3%	45.5%
HV 60d	33.6%	29.2%	36.1%	29.5%	34.0%
IV Rank	30.2%	18.7%	43.7%	28.6%	21.8%
IV Percentile	75.3%	45.6%	96.0%	73.0%	56.0%
Term Structure	-0.6%	-1.5%	1.1%	-0.5%	0.1%
VWIV	44.6%	38.4%	50.0%	45.9%	49.6%
Skew 25d	2.0%	-0.2%	3.8%	0.4%	3.2%
Skew 10d	4.6%	-0.3%	7.8%	2.2%	6.8%
Call IV 25d	42.3%	36.9%	48.0%	42.7%	37.7%
Put IV 25d	44.3%	39.3%	51.9%	43.1%	40.8%
Bid-Ask Spread %	29.46	16.48	44.74	22.01	22.01
Gamma HHI	0.06	0.04	0.08	0.06	0.07
Net GEX	115.3M	10.8M	220.6M	207.1M	10.8M
Net DEX	-13.53B	-16.36B	-10.16B	-14.42B	-11.60B
Net VEX	-42.0M	-45.3M	-35.4M	-38.1M	-45.3M
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	0.79	0.43	1.30	0.69	0.60
Total Volume	164,803.13	70,122	361,897	201,562	237,533
Total OI	1,784,865.913	1,664,283	2,029,648	1,676,187	1,840,128

Daily Data (23 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
2025-10-01	$288.76	$240.00	41.9%	12.8%	27.3%	28.6%	45.9%	0.4%	-0.5%	207.1M	-14.42B	-38.1M	0.69	22.01	118,947	82,615	731,627	944,560
2025-10-02	$288.90	$240.00	42.4%	13.3%	27.4%	29.7%	47.5%	1.0%	-1.5%	198.3M	-14.39B	-38.3M	0.71	16.48	62,612	44,481	745,569	974,189
2025-10-03	$293.14	$245.00	41.9%	13.3%	25.7%	28.4%	47.5%	1.2%	-0.9%	220.6M	-15.32B	-37.4M	0.80	25.07	81,676	65,494	754,959	989,930
2025-10-06	$303.51	$220.00	45.9%	12.6%	27.2%	37.5%	45.2%	-0.1%	-0.7%	163.3M	-16.36B	-35.4M	0.80	41.00	102,423	82,175	730,807	940,307
2025-10-07	$294.58	$220.00	45.1%	12.6%	30.6%	35.8%	44.6%	1.6%	-0.7%	145.1M	-14.39B	-38.6M	0.84	31.29	82,698	69,121	744,864	972,781
2025-10-08	$304.00	$220.00	46.6%	12.9%	30.0%	39.0%	45.5%	0.1%	-1.1%	161.7M	-16.09B	-38.0M	0.76	28.80	85,404	64,656	751,223	991,622
2025-10-09	$299.70	$220.00	45.0%	12.7%	30.6%	35.4%	45.4%	0.4%	-0.5%	164.3M	-14.96B	-40.9M	1.04	30.92	54,137	56,412	765,671	1,019,389
2025-10-10	$282.67	$220.00	48.7%	13.6%	38.6%	43.7%	50.0%	3.8%	-1.4%	37.3M	-11.03B	-44.9M	0.78	27.49	137,168	107,590	777,363	1,039,227
2025-10-13	$303.95	$220.00	46.7%	13.1%	45.5%	39.2%	46.5%	1.1%	-0.6%	164.2M	-16.07B	-39.3M	0.96	33.69	114,152	109,542	772,699	986,450
2025-10-14	$296.12	$220.00	46.8%	13.2%	47.1%	39.5%	47.3%	0.9%	-0.3%	133.9M	-14.36B	-41.2M	0.58	39.52	91,249	52,527	796,254	1,023,484
2025-10-15	$305.65	$220.00	46.7%	13.2%	47.9%	39.2%	46.3%	-0.2%	-1.1%	164.4M	-16.35B	-41.9M	0.62	38.97	194,003	119,752	823,212	1,041,023
2025-10-16	$299.87	$220.00	45.5%	13.0%	48.6%	36.7%	46.7%	2.9%	-0.0%	106.0M	-14.85B	-43.4M	0.59	34.99	228,166	133,731	882,010	1,100,971
2025-10-17	$296.54	$230.00	42.7%	12.2%	48.5%	30.3%	43.2%	3.7%	-0.5%	70.1M	-13.69B	-44.3M	0.73	44.74	123,910	90,661	905,900	1,123,748
2025-10-20	$298.23	$230.00	40.8%	11.7%	47.6%	26.0%	41.4%	3.4%	-1.2%	121.9M	-12.39B	-42.4M	0.81	27.80	74,058	60,003	730,592	933,691
2025-10-21	$295.04	$230.00	40.6%	11.6%	46.7%	25.5%	42.1%	3.1%	-0.7%	103.8M	-11.69B	-43.9M	0.93	19.58	39,748	37,032	751,557	954,226
2025-10-22	$288.33	$230.00	40.9%	11.7%	47.5%	26.3%	42.6%	3.2%	-1.3%	55.0M	-10.16B	-45.0M	1.03	22.68	68,288	70,066	753,384	970,135
2025-10-23	$291.41	$230.00	37.8%	10.8%	47.2%	19.3%	39.5%	2.6%	-0.2%	49.2M	-10.86B	-44.4M	1.12	32.49	44,698	50,015	764,600	1,007,704
2025-10-24	$295.82	$240.00	37.5%	10.9%	47.0%	18.7%	38.4%	2.4%	-1.3%	57.5M	-11.89B	-43.4M	1.30	33.73	60,563	79,014	773,083	1,036,985
2025-10-27	$297.88	$240.00	39.6%	11.6%	46.9%	23.4%	43.0%	2.5%	-0.3%	39.8M	-11.78B	-44.3M	0.79	25.02	73,486	57,741	734,192	1,020,434
2025-10-28	$301.38	$240.00	39.7%	11.8%	46.9%	23.6%	40.4%	2.2%	-0.2%	68.0M	-12.55B	-45.0M	0.43	21.72	63,722	27,136	753,943	1,048,379
2025-10-29	$305.13	$240.00	40.3%	12.4%	45.4%	24.8%	45.9%	2.9%	1.1%	106.5M	-13.23B	-44.7M	0.70	32.05	71,668	50,277	759,718	1,056,069
2025-10-30	$303.68	$240.00	38.9%	11.4%	45.5%	21.7%	40.6%	3.1%	0.1%	104.3M	-12.76B	-44.9M	0.66	25.52	42,134	27,988	764,710	1,068,547
2025-10-31	$300.48	$240.00	38.9%	11.4%	45.5%	21.8%	49.6%	3.2%	0.1%	10.8M	-11.60B	-45.3M	0.60	22.01	148,653	88,880	765,749	1,074,379