Q2 2026 13F · SEC CIK 1488542

Simplex Trading, LLC

Investment managerFiled 2026-08-12 for Q2 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $3.8B
Reported positions: 2,733
Top holdings a year, 3 yrs: +26.7%
Average holding period: 1.3 yrs

Simplex Trading, LLC is an investment manager that reported 2,733 positions worth $3.8B in its Q2 2026 13F, filed 2026-08-12. Its largest holdings were Nvidia Corporation Com (NVDA, 7.9%), Ishares (IWM, 4.2%), Ishares 20 Year Treasury Bond ETF (TLT, 4.2%). A portfolio copying its top holdings returned 26.7% a year over the last 3 years, against 20.4% for the S&P 500.

Simplex Trading, LLC holdings largest 50 of 2,733 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.

Simplex Trading, LLC 13F holdings
Stock	% of 13F value	Q1 2026	Shares	Share change	Reported value
NVDANvidia Corporation Com	7.9%	8.1%	1,520,692	+0.8%	$304.3M
IWMIshares	4.2%	—	536,810	—	$161.3M
TLTIshares 20 Year Treasury Bond ETF	4.2%	1.6%	1,860,997	+206.1%	$160.8M
GOOGLAlphabet Inc	3.4%	2.6%	368,241	+24.3%	$131.6M
SOXXIshares Semiconductor ETF	2.7%	1.2%	161,532	+38.9%	$103.5M
AMZNAmazon Com Inc Com	2.5%	4.9%	405,198	-47.0%	$96.6M
ORCLOracle Corp	2.2%	2.3%	567,292	+10.2%	$83.1M
AAPLApple Inc	2.0%	0.3%	259,549	+552.4%	$75.1M
MSFTMicrosoft Corp	1.9%	1.6%	197,528	+44.5%	$73.7M
TSMTaiwan Semiconductor Manufac	1.8%	3.7%	147,407	-58.1%	$70.4M
TSLATesla Inc Com	1.7%	—	150,665	—	$63.4M
MUMicron Technology Inc	1.6%	—	52,682	—	$60.8M
USOUnited Sts Oil Fd LP	1.4%	1.3%	490,737	+48.8%	$52.2M
GOOGAlphabet Inc	1.4%	1.3%	147,687	+1.6%	$52.2M
DRAMRoundhill ETF Trust	1.2%	—	625,556	—	$46.2M
SPYSpdr S&p 500 ETF Tr	1.0%	4.1%	53,496	-73.6%	$39.9M
FCXFreeport Mcmoran Inc Cl B	1.0%	0.4%	626,805	+156.1%	$39.4M
KLACKla Corp	1.0%	—	123,044	—	$37.1M
SOXLDirexion Shares ETF Trust	1.0%	—	138,147	—	$36.8M
METAMeta Platforms Inc Class A	0.9%	4.1%	60,293	-73.8%	$34.0M
ASMLAsml Hldg NV	0.9%	0.7%	16,406	-2.0%	$32.6M
AVGOBroadcom Inc	0.8%	0.4%	84,040	+94.3%	$31.7M
NOWServicenow Inc Com	0.8%	0.3%	291,808	+202.0%	$29.0M
MRVLMarvell Technology Inc	0.7%	—	94,668	—	$28.2M
GLDSpdr Gold Shares	0.7%	3.1%	76,477	-66.8%	$28.2M
UNHUnitedhealth Group Inc Com	0.7%	2.4%	65,879	-77.1%	$27.4M
GEVGe Vernova Inc	0.6%	0.5%	20,352	+20.4%	$23.9M
PLTRPalantir Technologies Inclass Class A	0.6%	1.0%	201,696	-12.8%	$23.5M
AMATApplied Matls Inc	0.6%	—	32,303	—	$23.4M
GLWCorning Inc.	0.6%	—	90,456	—	$23.1M
SOFISofi Technologies Inc	0.6%	0.5%	1,181,860	+22.0%	$21.2M
AMDAdvanced Micro Devices Inc	0.5%	1.6%	36,092	-86.2%	$21.0M
COINCoinbase Global Inc	0.5%	—	129,499	—	$18.9M
QCOMQualcomm Inc	0.5%	—	93,992	—	$17.4M
IBMInternational Business Machs	0.4%	—	57,427	—	$16.1M
PFEPfizer Inc	0.4%	1.1%	640,977	-49.4%	$15.4M
CHTRCharter Communications Inc	0.4%	0.4%	104,727	+67.4%	$14.9M
NOKNokia Corp	0.4%	—	1,081,936	—	$14.4M
GEGe Aerospace	0.4%	—	37,191	—	$13.9M
NKENike Inc Cl B	0.4%	0.7%	333,475	-16.2%	$13.7M
TMFDirexion Shares ETF Trust	0.3%	—	369,781	—	$13.1M
HUTHut 8 Corp	0.3%	—	109,022	—	$12.6M
URAGlobal X Uranium ETF	0.3%	0.7%	287,766	-38.8%	$12.6M
LOWLowes Cos Inc	0.3%	—	56,496	—	$12.5M
BKNGBooking Holdings Inc Com	0.3%	0.4%	67,550	+1922.5%	$12.0M
LITELumentum Hldgs Inc Com	0.3%	1.1%	12,958	-75.5%	$11.1M
TMUST-Mobile US Inc	0.3%	—	64,753	—	$10.9M
MRNAModerna Inc	0.3%	0.3%	154,558	-29.6%	$10.8M
XLUSpdr	0.3%	—	233,426	—	$10.6M
COHRCoherent Corp	0.3%	—	26,782	—	$10.6M

What Simplex 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.

Added to

BKNG Booking Holdings Inc Com+1922.5% shares
AAPL Apple Inc+552.4% shares
TLT Ishares 20 Year Treasury Bond ETF+206.1% shares
NOW Servicenow Inc Com+202.0% shares
FCX Freeport Mcmoran Inc Cl B+156.1% shares
AVGO Broadcom Inc+94.3% shares
CHTR Charter Communications Inc+67.4% shares
USO United Sts Oil Fd LP+48.8% shares

Reduced

AMD Advanced Micro Devices Inc-86.2% shares
UNH Unitedhealth Group Inc Com-77.1% shares
LITE Lumentum Hldgs Inc Com-75.5% shares
META Meta Platforms Inc Class A-73.8% shares
SPY Spdr S&p 500 ETF Tr-73.6% shares
GLD Spdr Gold Shares-66.8% shares
TSM Taiwan Semiconductor Manufac-58.1% shares
PFE Pfizer Inc-49.4% shares

Left the top 50

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: +36.8% /yr; S&P 500 +20.1%
3 years: +26.7% /yr; S&P 500 +20.4%
5 years: +8.3% /yr; S&P 500 +11.6%

A portfolio of the filer's 20 largest 13F positions, weighted by value and rebuilt each quarter on the day the filing became public. 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	$3.8B	2,733
Q1 2026	$3.2B	2,613
Q4 2025	$3.6B	2,448
Q3 2025	$4.5B	2,494
Q2 2025	$3.7B	2,289
Q1 2025	$2.8B	2,243
Q4 2024	$3.5B	2,305
Q3 2024	$3.0B	2,139
Q2 2024	$3.1B	2,253
Q1 2024	$3.4B	2,225
Q4 2023	$3.2B	2,261
Q3 2023	$2.7B	2,122

Questions about Simplex Trading, LLC's portfolio

What stocks does Simplex Trading, LLC own?

Simplex Trading, LLC's latest 13F, for Q2 2026 and filed Aug 12, 2026, lists 2,733 positions worth $3.8B. The largest are Nvidia Corporation Com (NVDA) at 7.9%, Ishares (IWM) at 4.2%, Ishares 20 Year Treasury Bond ETF (TLT) at 4.2%, Alphabet Inc (GOOGL) at 3.4% and Ishares Semiconductor ETF (SOXX) at 2.7%.

What did Simplex Trading, LLC buy last quarter?

In Q2 2026, Simplex Trading, LLC added Booking Holdings Inc Com (BKNG) (+1922.5% shares), Apple Inc (AAPL) (+552.4% shares) and Ishares 20 Year Treasury Bond ETF (TLT) (+206.1% shares), compared with its Q1 2026 filing.

What did Simplex Trading, LLC sell last quarter?

In Q2 2026, Simplex Trading, LLC cut from its top 50 Vaneck Semiconductor ETF (SMH), cut from its top 50 Intel Corp (INTC), cut from its top 50 Slb Limited (SLB), cut from its top 50 The Cigna Group (CI), cut from its top 50 Ishares Tr (LQD), Advanced Micro Devices Inc (AMD) (-86.2% shares), Unitedhealth Group Inc Com (UNH) (-77.1% shares) and Lumentum Hldgs Inc Com (LITE) (-75.5% shares), compared with its Q1 2026 filing.

How has Simplex Trading, LLC's portfolio performed?

A portfolio copying Simplex Trading, LLC's 20 largest 13F holdings each quarter, from the day each filing was public, returned +26.7% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +36.8% against +20.1%. Over 5 years: +8.3% a year against +11.6%.

When is Simplex Trading, LLC's next 13F filing due?

13F filings are due 45 days after each quarter ends. Simplex 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.