Q2 2026 13F · SEC CIK 932540

Group One Trading LLC

Investment managerFiled 2026-08-14 for Q2 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $3.5B
Reported positions: 2,157
Top holdings a year, 3 yrs: +38.4%
Average holding period: 2 qtrs

Group One Trading LLC is an investment manager that reported 2,157 positions worth $3.5B in its Q2 2026 13F, filed 2026-08-14. Its largest holdings were Roundhill ETF Trust (DRAM, 3.1%), Taiwan Semiconductor Manufac (TSM, 2.7%), Micron Technology Inc (MU, 2.4%). A portfolio copying its top holdings returned 38.4% a year over the last 3 years, against 20.4% for the S&P 500.

Group One Trading LLC holdings largest 50 of 2,157 positions.

Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.

Group One Trading LLC 13F holdings
Stock	% of 13F value	Q1 2026	Shares	Share change	Reported value
DRAMRoundhill ETF Trust	3.1%	—	1,470,486	—	$108.6M
TSMTaiwan Semiconductor Manufac	2.7%	1.5%	193,229	+40.0%	$92.3M
MUMicron Technology Inc	2.4%	1.7%	72,926	-53.2%	$84.2M
URAGlobal X Fds	2.3%	2.8%	1,820,258	+3.9%	$79.5M
MRVLMarvell Technology Inc	1.6%	—	186,955	—	$55.7M
UNHUnitedhealth Group Inc	1.5%	—	127,354	—	$52.9M
KKRKkr & Co Inc	1.3%	1.0%	482,993	+44.2%	$44.3M
BKNGBooking Holdings Inc	1.0%	—	191,731	—	$34.2M
URNMSprott Fds Tr	0.9%	1.2%	624,929	+8.1%	$32.9M
OSCROscar Health, Inc.	0.9%	0.5%	1,148,112	-8.7%	$32.7M
CIThe Cigna Group	0.7%	—	91,369	—	$25.2M
FCELFuelCell Energy Inc	0.7%	—	696,353	—	$25.1M
MARMarriott Intl Inc New	0.7%	1.1%	63,890	-39.6%	$23.7M
CHTRCharter Communications Inc	0.7%	—	164,097	—	$23.3M
PDDPdd Holdings Inc	0.7%	—	302,886	—	$23.1M
DASHDoordash Inc	0.7%	—	123,933	—	$22.9M
AGFirst Majestic	0.6%	1.4%	1,312,998	-32.1%	$22.3M
NVDANvidia Corporation	0.6%	—	109,278	—	$21.9M
VSHVishay Intertechnology Inc	0.6%	—	405,758	—	$21.8M
XLKSelect Sector Spdr Tr	0.6%	—	111,928	—	$21.3M
COHRCoherent Corp	0.6%	0.6%	53,595	-29.2%	$21.1M
KWEBKraneshares Trust	0.6%	0.7%	857,064	+10.8%	$21.0M
PFEPfizer Inc	0.6%	0.5%	868,402	+46.6%	$20.9M
ACMRACM Research, Inc.	0.6%	—	157,056	—	$19.9M
MSTRStrategy Inc	0.6%	—	220,929	—	$19.2M
LITELumentum Hldgs Inc	0.6%	0.6%	22,359	-18.6%	$19.2M
PLTRPalantir Technologies Inc	0.5%	—	158,800	—	$18.5M
NNNextnav Inc	0.5%	0.5%	1,029,972	-0.0%	$18.4M
ALKAlaska Air Group Inc	0.5%	—	351,374	—	$18.3M
SLBSlb Limited	0.5%	0.5%	386,954	+24.4%	$18.0M
VFCV F Corp	0.5%	0.6%	1,040,180	+2.4%	$17.4M
ECHOEchoStar Corp	0.5%	—	162,886	—	$16.5M
PAASPan Amern Silver Corp	0.5%	0.5%	368,039	+22.8%	$16.5M
GLNGGolar Lng Ltd Shs	0.5%	—	330,159	—	$16.5M
AAOIApplied Optoelectronics Inc	0.5%	—	110,362	—	$16.4M
PEPPepsico Inc	0.5%	—	120,280	—	$16.3M
AALAmerican Airlines Group Inc	0.5%	0.4%	894,605	-24.6%	$16.2M
ETPCEnergy Transfer L P	0.5%	0.6%	840,158	-11.5%	$16.1M
RKTRocket Cos Inc	0.5%	0.5%	1,016,570	-1.0%	$16.0M
IRENIren Limited	0.5%	0.6%	344,912	-38.8%	$15.8M
CCJCameco Corp	0.4%	0.6%	151,446	-3.3%	$15.4M
SGHCSuper Group Sghc Ltd F	0.4%	0.6%	1,126,513	-30.5%	$15.3M
GLWCorning Inc	0.4%	—	59,465	—	$15.2M
CIFRCipher Digital Inc	0.4%	—	618,316	—	$15.1M
WDCWestern Digital Corp Com	0.4%	—	23,641	—	$15.1M
KEELKeel Infrastructure Corp	0.4%	—	2,628,322	—	$15.1M
LMNDLemonade, Inc.	0.4%	—	231,456	—	$15.1M
HOODRobinhood Mkts Inc	0.4%	—	147,484	—	$14.8M
INTCIntel Corp	0.4%	0.7%	105,240	-77.6%	$14.7M
MRNAModerna Inc	0.4%	—	203,915	—	$14.3M

What Group One Trading LLC bought and sold in Q2 2026, against Q1 2026.

New positions

Q1 2026's filing was too long to tell new positions apart.

Share counts compared with the Q1 2026 13F; a split also changes share counts. The latest filing lists more than 50 positions, so a position that left the top 50 may still be held.

How the holdings did against the S&P 500.

1 year: +26.9% /yr; S&P 500 +20.1%
3 years: +38.4% /yr; S&P 500 +20.4%
5 years: +14.9% /yr; S&P 500 +11.6%

A portfolio of the filer's 20 largest 13F positions, weighted by value, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.

Reported 13F value by quarter.

13F value by quarter
Quarter	13F value	Positions
Q2 2026	$3.5B	2,157
Q1 2026	$3.0B	2,167
Q4 2025	$3.4B	2,291
Q3 2025	$3.3B	2,243
Q2 2025	$3.1B	2,001
Q1 2025	$2.4B	1,918
Q4 2024	$2.9B	1,993
Q3 2024	$2.5B	1,677
Q2 2024	$3.2B	1,704
Q1 2024	$2.8B	1,718
Q4 2023	$3.2B	1,837
Q3 2023	$2.5B	1,877

Questions about Group One Trading LLC's portfolio

What stocks does Group One Trading LLC own?

Group One Trading LLC's latest 13F, for Q2 2026 and filed Aug 14, 2026, lists 2,157 positions worth $3.5B. The largest are Roundhill ETF Trust (DRAM) at 3.1%, Taiwan Semiconductor Manufac (TSM) at 2.7%, Micron Technology Inc (MU) at 2.4%, Global X Fds (URA) at 2.3% and Marvell Technology Inc (MRVL) at 1.6%.

What did Group One Trading LLC buy last quarter?

In Q2 2026, Group One Trading LLC added Pfizer Inc (PFE) (+46.6% shares), Kkr & Co Inc (KKR) (+44.2% shares) and Taiwan Semiconductor Manufac (TSM) (+40.0% shares), compared with its Q1 2026 filing.

What did Group One Trading LLC sell last quarter?

In Q2 2026, Group One Trading LLC cut from its top 50 Amplify ETF Tr (SILJ), cut from its top 50 Petroleo Brasileiro S A Sponsored ADR (b (PBR), cut from its top 50 Ishares Inc (EWY), cut from its top 50 Cytokinetics (CYTK), cut from its top 50 Global X Fds (COPX), Intel Corp (INTC) (-77.6% shares), Micron Technology Inc (MU) (-53.2% shares) and Marriott Intl Inc New (MAR) (-39.6% shares), compared with its Q1 2026 filing.

How has Group One Trading LLC's portfolio performed?

A portfolio copying Group One Trading LLC's 20 largest 13F holdings each quarter, from the day each filing was public, returned +38.4% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +26.9% against +20.1%. Over 5 years: +14.9% a year against +11.6%.

When is Group One Trading LLC's next 13F filing due?

13F filings are due 45 days after each quarter ends. Group One Trading LLC's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.