Parallax Volatility Advisers, L.P.

Position in BAX — Baxter International Inc

CIK 1521001 San Francisco, CA

Back to BAX Full portfolio

Position in BAX

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$16

-$975,359 QoQ

Shares Held

-100.0% QoQ

Ownership

0.000%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

21 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in BAX Over Time

Shares Held

Position Value (USD)

Derivatives in BAX

reported options exposure · as of Mar 31, 2026

CallValue

CallShares

PutValue

$1,344,000

PutShares

80,000

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Medical Instruments & Supplies

Healthcare · as of Jun 30, 2026

Parallax Volatility Advisers, L.P. holds $2,386 across 1 Medical Instruments & Supplies name.

#	Ticker	Company	Shares	Value (USD)	Open
1	ISRG	Intuitive Surgical Inc	6	$2,386

All Filings in BAX

Export CSV

50 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$16	1	-100.0%	Shares	Sole	2026-05-15
2026-03-31	$1,344,000	80,000	-88.1%	Put	Sole	2026-05-15
2025-09-30	$15,255,900	670,000	+3250.0%	Put	Sole	2025-11-14
2025-09-30	$975,375	42,836	+152.6%	Shares	Sole	2025-11-14
2025-09-30	$9,108	400	-98.0%	Call	Sole	2025-11-14
2024-12-31	$583,200	20,000	-67.7%	Put	Sole	2025-02-14
2024-12-31	$583,200	20,000	-20.0%	Call	Sole	2025-02-14
2024-09-30	$643,933	16,959	+305.4%	Shares	Sole	2024-11-14
2024-09-30	$2,354,140	62,000	+55.0%	Put	Sole	2024-11-14
2024-06-30	$1,338,000	40,000	-38.5%	Put	Sole	2024-08-14
2024-06-30	$139,921	4,183	-53.9%	Shares	Sole	2024-08-14
2024-03-31	$387,865	9,075	-87.9%	Shares	Sole	2024-05-15
2024-03-31	$1,068,500	25,000	-44.4%	Call	Sole	2024-05-15
2024-03-31	$2,778,100	65,000	-37.6%	Put	Sole	2024-05-15
2023-12-31	$4,024,506	104,100	-1.9%	Put	Sole	2024-02-14
2023-12-31	$1,739,700	45,000	0.0%	Call	Sole	2024-02-14
2023-12-31	$2,904,951	75,141	+3.3%	Shares	Sole	2024-02-14
2023-09-30	$4,004,214	106,100	+4722.7%	Put	Sole	2023-11-14
2023-09-30	$1,698,300	45,000	-28.3%	Call	Sole	2023-11-14
2023-09-30	$2,745,320	72,743	+10822.4%	Shares	Sole	2023-11-14
2023-06-30	$2,861,168	62,800	-24.5%	Call	Sole	2023-08-14
2023-06-30	$100,232	2,200	-95.6%	Put	Sole	2023-08-14
2023-03-31	$2,036,112	50,200	+924.5%	Put	Sole	2023-05-15
2023-03-31	$3,374,592	83,200	-44.5%	Call	Sole	2023-05-15
2022-12-31	$33,946	666	-50.8%	Shares	Sole	2023-02-27
2022-12-31	$249,753	4,900	-2.0%	Put	Sole	2023-02-27
2022-09-30	$269,300	5,000	+100.0%	Put	Sole	2022-11-21
2022-09-30	$8,079,000	150,000	+49900.0%	Call	Sole	2022-11-21
2022-03-31	$105,066	1,355	-97.8%	Shares	Sole	2022-05-16
2022-03-31	$23,262	300	-100.0%	Call	Sole	2022-05-16
2022-03-31	$193,850	2,500	-99.1%	Put	Sole	2022-05-16
2021-12-31	$5,183,963	60,391	-8.7%	Shares	Sole	2022-02-14
2021-12-31	$23,709,008	276,200	-3.8%	Put	Sole	2022-02-14
2021-09-30	$51,523,458	640,600	+91414.3%	Call	Sole	2021-11-15
2021-09-30	$23,099,496	287,200	+130.1%	Put	Sole	2021-11-15
2021-06-30	$10,046,400	124,800	+13.6%	Put	Sole	2021-08-16
2021-06-30	$5,327,409	66,179	+19.3%	Shares	Sole	2021-08-16
2021-03-31	$9,268,966	109,900	-40.9%	Put	Sole	2021-05-14
2021-03-31	$59,038	700	-99.4%	Call	Sole	2021-05-14
2021-03-31	$4,676,990	55,454	-8.5%	Shares	Sole	2021-05-14
2020-12-31	$9,668,920	120,500	-59.8%	Call	Sole	2021-02-16
2020-12-31	$4,861,340	60,585	+346.1%	Shares	Sole	2021-02-16
2020-12-31	$14,932,664	186,100	-34.0%	Put	Sole	2021-02-16
2020-09-30	$24,101,874	299,700	+114.1%	Call	Sole	2020-11-13
2020-09-30	$1,092,103	13,580	-49.0%	Shares	Sole	2020-11-13
2020-09-30	$22,686,482	282,100	+18.0%	Put	Sole	2020-11-13
2020-06-30	$2,290,690	26,605	+84.1%	Shares	Sole	2020-08-14
2020-06-30	$20,577,900	239,000	—	Put	Sole	2020-08-14
2020-06-30	$12,054,000	140,000	—	Call	Sole	2020-08-14
2020-03-31	$1,173,033	14,448	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.