BSX Options History — December 2025

In December 2025, BSX traded between $91.72 and $101.19. ATM implied volatility averaged 23.0%, placing in the 14.0% IV rank vs the trailing year. The 30-day expected move averaged 6.7%. IV traded below realized volatility by 0.8% (HV 20d: 23.8%). Max pain ranged from $95.00 to $100.00. Net GEX was positive for 10 of 22 trading days. Term structure was in contango for 17 of 22 days. Put/call ratio averaged 1.40.

Notable Days

2025-12-08: Highest Volume — 16,844 contracts
2025-12-29: Largest IV spike — 6.9% change
2025-12-29: Highest IV Rank — 20.7%
2025-12-18: Largest Expected Move — 7.0%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$95.42	$91.72	$101.19	$101.19	$95.51
Max Pain	$96.36	$95.00	$100.00	$100.00	$95.00
ATM IV	23.0%	20.3%	25.3%	22.5%	24.7%
Expected Move	6.7%	6.4%	7.0%	6.8%	6.4%
HV 20d	23.8%	19.4%	27.5%	24.4%	19.4%
HV 60d	22.5%	21.7%	23.0%	22.1%	22.5%
IV Rank	14.0%	6.3%	20.7%	12.5%	19.0%
IV Percentile	38.6%	11.9%	61.9%	34.5%	55.6%
Term Structure	1.2%	-1.0%	3.6%	-0.0%	3.6%
VWIV	23.6%	22.7%	24.6%	24.6%	22.8%
Skew 25d	1.2%	-5.2%	4.1%	-2.3%	4.1%
Skew 10d	1.3%	-20.0%	16.3%	-8.4%	7.4%
Call IV 25d	22.8%	20.6%	26.9%	26.9%	21.9%
Put IV 25d	24.1%	19.4%	26.6%	24.7%	26.1%
Bid-Ask Spread %	67.25	52.32	83.04	52.32	65.87
Gamma HHI	0.10	0.08	0.14	0.10	0.09
Net GEX	-607.0K	-9.0M	7.2M	5.9M	4.6M
Net DEX	-35.7M	-194.4M	170.2M	-194.4M	-113.8M
Net VEX	-2.1M	-2.5M	-1.8M	-2.1M	-2.2M
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	1.40	0.28	5.27	5.27	1.23
Total Volume	6,903.182	2,221	16,844	8,643	2,428
Total OI	193,517.545	162,620	227,122	162,620	219,734

Daily Data (22 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
2025-12-01	$101.19	$100.00	22.5%	6.8%	24.4%	12.5%	24.6%	-2.3%	-0.0%	5.9M	-194.4M	-2.1M	5.27	52.32	N/A	N/A	1,378	7,265	89,278	73,342
2025-12-02	$99.35	$100.00	22.7%	6.7%	24.2%	13.2%	23.5%	2.0%	0.1%	-292.9K	-105.9M	-2.1M	1.18	56.51	N/A	N/A	1,342	1,580	89,559	79,989
2025-12-03	$98.59	$100.00	21.8%	6.7%	24.3%	10.7%	23.8%	3.4%	0.2%	-3.2M	-55.7M	-2.0M	1.14	64.51	N/A	N/A	3,853	4,381	89,711	80,528
2025-12-04	$97.43	$97.50	21.9%	6.7%	24.7%	10.9%	23.5%	2.7%	0.1%	-5.2M	-12.8M	-2.1M	0.76	64.90	N/A	N/A	2,228	1,699	92,186	84,218
2025-12-05	$97.50	$97.50	22.0%	6.7%	24.7%	11.1%	23.6%	3.7%	-0.6%	-5.3M	-13.9M	-2.0M	0.33	81.89	N/A	N/A	2,873	935	93,026	84,535
2025-12-08	$93.83	$97.50	22.2%	6.7%	27.5%	11.7%	23.9%	-5.2%	1.8%	-6.0M	131.3M	-1.8M	1.55	73.26	N/A	N/A	6,605	10,239	92,907	77,480
2025-12-09	$92.64	$97.50	21.2%	6.7%	27.3%	8.9%	23.3%	-0.4%	2.7%	-7.7M	166.4M	-1.8M	0.76	67.29	N/A	N/A	2,801	2,142	96,055	85,313
2025-12-10	$92.33	$97.50	20.3%	6.8%	26.3%	6.3%	23.4%	-0.4%	2.8%	-8.1M	121.7M	-1.9M	1.81	81.51	N/A	N/A	2,541	4,612	96,758	82,449
2025-12-11	$91.72	$97.50	21.2%	6.5%	24.6%	8.9%	23.2%	0.6%	1.7%	-9.0M	170.2M	-1.8M	2.13	62.56	N/A	N/A	1,759	3,739	97,898	85,115
2025-12-12	$92.49	$95.00	21.7%	6.5%	24.8%	10.2%	22.7%	-0.7%	1.5%	-8.5M	104.9M	-1.8M	0.38	72.66	N/A	N/A	5,931	2,252	99,100	79,881
2025-12-15	$91.91	$95.00	22.7%	6.6%	24.2%	13.2%	23.5%	1.0%	-0.1%	-5.1M	91.4M	-1.8M	0.42	72.89	N/A	N/A	4,470	1,897	101,172	79,589
2025-12-16	$92.78	$95.00	23.8%	6.9%	24.7%	16.4%	24.3%	-0.0%	0.4%	-3.4M	52.6M	-1.9M	0.28	83.04	N/A	N/A	11,282	3,207	103,183	80,605
2025-12-17	$94.06	$95.00	23.4%	6.7%	24.6%	15.1%	23.7%	1.0%	0.5%	-281.2K	-42.6M	-2.1M	0.76	67.53	N/A	N/A	8,218	6,225	120,502	82,392
2025-12-18	$96.05	$95.00	24.4%	7.0%	24.1%	18.3%	24.5%	1.4%	-0.1%	4.8M	-155.8M	-2.5M	0.79	69.88	N/A	N/A	5,643	4,482	132,942	92,077
2025-12-19	$95.57	$95.00	23.6%	6.7%	24.2%	15.8%	23.0%	2.4%	-1.0%	200.8K	-125.0M	-2.4M	1.69	81.38	N/A	N/A	2,193	3,701	133,702	93,420
2025-12-22	$96.47	$95.00	24.0%	6.9%	24.4%	17.1%	24.2%	3.2%	1.6%	5.0M	-143.6M	-2.4M	0.38	55.81	N/A	N/A	5,238	1,967	116,360	90,141
2025-12-23	$95.99	$95.00	23.8%	6.7%	24.1%	16.4%	23.6%	2.4%	2.4%	5.6M	-131.8M	-2.4M	2.56	71.87	N/A	N/A	1,894	4,851	118,001	90,507
2025-12-24	$95.91	$95.00	23.5%	6.8%	20.3%	15.7%	23.6%	1.8%	1.6%	5.3M	-130.1M	-2.4M	1.26	58.00	N/A	N/A	989	1,249	118,954	93,972
2025-12-26	$96.07	$95.00	23.6%	6.5%	20.3%	15.9%	23.0%	1.8%	2.1%	7.2M	-137.5M	-2.3M	0.34	56.82	N/A	N/A	1,652	569	119,458	94,007
2025-12-29	$95.80	$95.00	25.3%	6.7%	20.1%	20.7%	23.5%	2.4%	1.4%	4.6M	-127.6M	-2.3M	1.28	59.89	N/A	N/A	1,409	1,798	118,537	93,747
2025-12-30	$96.06	$95.00	25.1%	6.6%	20.2%	20.0%	23.8%	2.3%	3.2%	5.5M	-133.7M	-2.3M	4.45	59.01	N/A	N/A	1,165	5,188	120,281	94,775
2025-12-31	$95.51	$95.00	24.7%	6.4%	19.4%	19.0%	22.8%	4.1%	3.6%	4.6M	-113.8M	-2.2M	1.23	65.87	N/A	N/A	1,091	1,337	120,830	98,904