GROUP ONE TRADING LLC

Position in PFSI — PennyMac Financial Services, Inc.

CIK 932540 CHICAGO, IL

Position in PFSI

as of Mar 31, 2026 · filed May 13, 2026 Compact

Position Value

$4,530,116

+$1,433,505 QoQ

Shares Held

51,832

+66.8% QoQ

Ownership

0.100%

of shares outstanding

% of Portfolio

0.18%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

10 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Financial Services · as of Mar 31, 2026

GROUP ONE TRADING LLC holds $20,908,951 across 5 Mortgage Finance names. PFSI ranks #2 (21.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	RKT	Rocket Companies, Inc.	1,026,661	$14,629,919
2	PFSI	PennyMac Financial Services, Inc. This page	51,832	$4,530,116
3	ONIT	Onity Group Inc.	26,629	$1,045,720
4	UWMC	UWM Holdings Corp	188,940	$683,962
5	BETR	Better Home & Finance Holding Co	540	$19,234

10 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$4,530,116	51,832	+66.8%	Shares	Sole	2026-05-13
2025-06-30	$3,096,611	31,078	+151.0%	Shares	Sole	2025-08-14
2025-03-31	$1,239,662	12,383	-95.0%	Shares	Sole	2025-05-14
2022-12-31	$13,901,247	245,345	-2.3%	Shares	Sole	2023-02-09
2022-09-30	$10,767,685	250,995	+154.2%	Shares	Sole	2022-11-09
2022-06-30	$4,316,056	98,743	-45.2%	Shares	Sole	2022-08-11
2022-03-31	$9,592,545	180,311	+87.4%	Shares	Sole	2022-05-12
2021-09-30	$5,881,011	96,205	+32.7%	Shares	Sole	2021-11-12
2021-06-30	$4,473,218	72,476	-21.0%	Shares	Sole	2021-08-10
2020-03-31	$2,027,575	91,704	—	Shares	Sole	2020-05-13
No filing history on record for this holder in this stock.