Simplex Trading, LLC

In its 13F for Q1 2026 (holdings as of March 31, 2026, filed May 14, 2026), Simplex Trading, LLC reported 2,613 stock positions worth $3.2 billion. Its top holding was Nvidia (NVDA) at 8.1% of the portfolio, followed by Amazon.com (AMZN, 4.9%) and SS SPDR S&P 500 ETF Trust-US (SPY, 4.1%). Compared with Q4 2025, it opened 1,118 new positions, sold out of 955, added to 657 and reduced 836. The biggest buy was a new position in Amazon.com (AMZN) and the biggest sale Apple (AAPL, shares −94%).

Most Recent 13F
Q2 2026
Location
CHICAGO, IL
CIK
0001488542
Portfolio Value
$3.2B (Q1 2026)
SEC Filing
0001488542-26-000009 ↗ filed May 14, 2026

Holdings Value

0$1.0B$2.0B$3.0B$4.0B$5.0B Q1 2024: $3.4B Q1 2024 Q2 2024: $3.1B Q2 2024 Q3 2024: $3.0B Q3 2024 Q4 2024: $3.5B Q4 2024 Q1 2025: $2.8B Q1 2025 Q2 2025: $3.7B Q2 2025 Q3 2025: $4.5B Q3 2025 Q4 2025: $3.6B Q4 2025 Q1 2026: $3.2B $3.2B Q1 2026 Q2 2026: $3.8B Q2 2026

Holdings 2,613 stocks · $3.2B

NVDA Nvidia Corp. 8.15% 1,509,153 $263.2M Add +103.7%
AMZN Amazon.com Inc. 4.93% 764,884 $159.3M New
SPY SS SPDR S&P 500 ETF Trust-US 4.08% 202,806 $131.9M Add +131.7%
META Meta Platforms Inc. Class A 4.07% 229,853 $131.5M Add +266.8%
TSM Taiwan Semiconductor-SP ADR 3.68% 351,805 $118.9M New
GLD SPDR Gold Shares 3.07% 230,612 $99.2M New
GOOGL Alphabet Inc. Class A 2.64% 296,315 $85.2M Add +664.3%
UNH Unitedhealth Group Inc. 2.41% 287,580 $77.8M Add +210.1%
ORCL Oracle Corp. 2.34% 514,658 $75.7M Add +291.7%
AMD Advanced Micro Devices 1.64% 260,622 $53.0M Add +361.5%
TLT iShares 20+ Year Treasury BD 1.63% 608,012 $52.7M New
MSFT Microsoft Corp. 1.57% 136,729 $50.6M Add +93.6%
USO United States Oil Fund LP 1.30% 329,788 $42.0M New
GOOG Alphabet Inc. Class C 1.29% 145,393 $41.7M Add +199.7%
SOXX iShares Semiconductor ETF 1.18% 116,273 $38.2M Reduce -25.5%
LITE Lumentum Holdings Inc. 1.15% 52,807 $37.1M Add +198.0%
SMH Vaneck Semiconductor ETF 1.11% 93,701 $35.9M Add +20.7%
PFE Pfizer Inc. 1.10% 1,266,685 $35.6M Reduce -15.1%
PLTR Palantir Technologies Inc. Class A 1.05% 231,292 $33.8M Add +20.9%
INTC Intel Corp. 1.03% 757,722 $33.4M Reduce -30.0%
SLB SLB Ltd. filed as SLB LIMITED 0.87% 547,131 $28.1M Add +14.2%
CI The Cigna Group 0.81% 98,203 $26.2M Reduce -29.9%
URA Global X Uranium ETF 0.70% 470,104 $22.8M New
LQD Ishr Ibx Usd Invgd CB ETF-Ui 0.70% 208,171 $22.7M New
ASML ASML Holding NV-NY Reg SHS filed as ASML HLDG NV 0.68% 16,741 $22.1M New
NKE Nike Inc. Class B 0.65% 398,174 $21.0M Add +42.6%
DOW Dow Inc. filed as DOW HLDGS INC 0.59% 459,257 $19.0M Add +54.5%
PEP Pepsico Inc. 0.58% 121,557 $18.9M New
XLB SS Materials Select Sector 0.57% 369,219 $18.4M Add +233.7%
NFLX Netflix Inc. 0.55% 184,871 $17.8M Reduce -73.3%
XLF SS Financial Select Sector 0.54% 355,726 $17.6M Add +834.2%
SOFI Sofi Technologies Inc. 0.48% 968,408 $15.4M Reduce -46.4%
GEV GE Vernova Inc. 0.46% 16,901 $14.8M Add +57.8%
NVO Novo-Nordisk A/S-Spons ADR 0.45% 392,803 $14.4M Reduce -61.4%
FCX Freeport-McMoran Inc. 0.45% 244,754 $14.4M Reduce -56.8%
BKNG Booking Holdings Inc. 0.44% 3,340 $14.1M Reduce -35.1%
CHTR Charter Communications Inc. Class A 0.42% 62,565 $13.5M New
AVGO Broadcom Inc. 0.41% 43,244 $13.4M Reduce -81.4%
UNP Union Pacific Corp. 0.41% 54,003 $13.1M Add +2483.9%
B Barrick Mining Corp. 0.38% 297,916 $12.2M Add +16.3%
MS Morgan Stanley 0.37% 73,071 $12.0M Add +8.7%
MRNA Moderna Inc. 0.35% 219,573 $11.2M Add +144.8%
NOW ServiceNow Inc. 0.31% 96,638 $10.1M Add +123.8%
AAPL Apple Inc. 0.31% 39,784 $10.1M Reduce -94.4%
ALAB Astera Labs Inc. 0.31% 91,866 $10.1M New
AXTI Axt Inc. 0.31% 173,574 $9.9M Add +97.9%
QQQ Invesco QQQ Trust Series 1 0.29% 16,296 $9.4M New
ESLT Elbit Systems Ltd. 0.29% 11,042 $9.4M Add +1246.6%
ZTS Zoetis Inc. 0.27% 74,697 $8.8M Add +8.9%
BABA Alibaba Group Holding-SP ADR 0.26% 66,720 $8.4M Reduce -70.8%
SNAP Snap Inc. Class A 0.25% 1,722,466 $7.9M Add +12.8%
ET Energy Transfer LP 0.24% 394,233 $7.6M Reduce -46.2%
TSLA Tesla Inc. 0.23% 20,177 $7.5M Reduce -83.2%
IBIT iShares Bitcoin Trust ETF 0.23% 193,026 $7.4M Reduce -4.9%
CP Canadian Pacific Kansas City 0.22% 92,018 $7.2M New
SQQQ Proshares Ultrapro Short QQQ 0.22% 88,643 $7.1M Reduce -39.5%
IREN Iren Ltd. filed as IREN LIMITED 0.22% 207,840 $7.1M Add +8.3%
ADI Analog Devices Inc. 0.22% 21,951 $7.0M Add +568.0%
CAMT Camtek Ltd. 0.20% 43,213 $6.6M New
APGE Apogee Therapeutics Inc. 0.20% 77,808 $6.5M Add +23.9%
DAL Delta Air Lines Inc. 0.20% 98,263 $6.5M New
OSCR Oscar Health Inc. Class A 0.20% 565,246 $6.5M Reduce -11.6%
GLW Corning Inc. 0.20% 47,403 $6.4M Add +45.4%
TMF Dir DLY 20+YR TR BL3X ETF-Ui 0.19% 173,012 $6.2M Add +40.1%
ETHA iShares Ethereum Trust ETF 0.19% 392,685 $6.2M Add +161.7%
CCJ Cameco Corp. 0.19% 55,851 $6.1M Add +16.1%
OKTA Okta Inc. 0.19% 76,826 $6.0M Add +162.6%
PEN Penumbra Inc. 0.18% 17,719 $5.8M Add +13530.0%
MOG.A Moog Inc. Class A 0.18% 19,867 $5.8M Add +144.5%
MSTR Strategy Inc. 0.18% 45,923 $5.7M New
FXI iShares China Large-Cap ETF 0.18% 159,011 $5.7M Add +569.8%
COPX Global X Copper Miners ETF 0.18% 74,508 $5.7M New
UUUU Energy Fuels Inc. 0.17% 307,525 $5.6M Add +213.5%
KKR KKR & Co. Inc. 0.17% 60,647 $5.6M New
XLY SS Consumer Disc Select Sect 0.17% 51,226 $5.6M New
STZ Constellation Brands Inc. Class A 0.17% 37,176 $5.6M Add +749.5%
KGS Kodiak Gas Services Inc. 0.17% 93,252 $5.4M Add +362.8%
CAH Cardinal Health Inc. 0.17% 25,707 $5.4M Add +7.8%
CVS CVS Health Corp. 0.16% 74,158 $5.3M Add +60.6%
UAA Under Armour Inc. Class A 0.16% 897,041 $5.3M Reduce -21.4%
SLVR Sprott SLVR Miner & PHY SLVR 0.16% 87,438 $5.2M Add +15.9%
CNQ Canadian Natural Resources 0.16% 104,671 $5.1M Add +522.1%
PAAS Pan American Silver Corp. 0.15% 89,714 $4.9M Add +2.1%
EOSE Eos Energy Enterprises Inc. 0.15% 984,329 $4.9M Reduce -56.2%
NCLH Norwegian Cruise Line Holdin 0.15% 260,450 $4.9M New
IEF iShares 7-10 Year Treasury B 0.15% 50,658 $4.8M New
LULU Lululemon Athletica Inc. 0.15% 31,540 $4.8M Reduce -57.3%
UBS UBS Group AG-Reg 0.15% 122,318 $4.8M Add +130.7%
ARM Arm Holdings PLC-ADR 0.15% 31,465 $4.8M Reduce -79.5%
AG First Majestic Silver Corp. 0.15% 221,445 $4.8M Add +2279.3%
SPOT Spotify Technology SA 0.15% 9,748 $4.7M Reduce -30.3%
ASTS Ast Spacemobile Inc. 0.14% 56,256 $4.7M Reduce -86.7%
TMO Thermo Fisher Scientific Inc. 0.14% 9,480 $4.7M New
SILJ Amplify Junior Silver Miners 0.14% 156,287 $4.6M Reduce -62.7%
MOS The Mosaic Co. 0.14% 181,811 $4.6M New
PRMB Primo Brands Corp. 0.14% 246,087 $4.6M Reduce -15.3%
XPEV Xpeng Inc. - ADR 0.14% 263,566 $4.5M Reduce -41.1%
WULF Terawulf Inc. 0.14% 308,017 $4.4M Reduce -84.1%
SLVP iShares MSCI Global Silver A 0.14% 123,936 $4.4M Add +49.0%
MELI MercadoLibre Inc. 0.13% 2,497 $4.3M Reduce -61.6%

Show all 2,613 holdings

Options reported separately and not counted above: STATE STR SPDR S&P 500 ETF T puts ($27.4B), STATE STR SPDR S&P 500 ETF T calls ($14.1B), INVESCO QQQ TR puts ($6.5B), INVESCO QQQ TR calls ($6.0B), ISHARES TR puts ($5.1B), ISHARES TR calls ($3.9B), TESLA INC calls ($3.4B), NVIDIA CORPORATION puts ($3.4B), NVIDIA CORPORATION calls ($3.3B), TESLA INC puts ($3.1B), SPDR GOLD TR calls ($2.4B), META PLATFORMS INC calls ($2.4B), and 6302 more.

Portfolio Sells Q4 2025 → Q1 2026

AAPL Apple Inc. Reduce -94.4% 0.31% −5.11
AVGO Broadcom Inc. Reduce -81.4% 0.41% −1.85
WDC Western Digital Corp. Reduce -98.3% 0.05% −1.61
SOXL Direx Dail Semi Bu 3X Et-Usd Sold out 0.00% −1.46
TSLA Tesla Inc. Reduce -83.2% 0.23% −1.29
NFLX Netflix Inc. Reduce -73.3% 0.55% −1.27
NVO Novo-Nordisk A/S-Spons ADR Reduce -61.4% 0.45% −1.01
SOFI Sofi Technologies Inc. Reduce -46.4% 0.48% −0.85
RKLB Rocket Lab Corp. Reduce -99.7% 0.00% −0.78
BE Bloom Energy Corp. Class A Sold out 0.00% −0.74
ASTS Ast Spacemobile Inc. Reduce -86.7% 0.14% −0.72
VRT Vertiv Holdings Co. Class A Sold out 0.00% −0.69
BABA Alibaba Group Holding-SP ADR Reduce -70.8% 0.26% −0.68
NEE Nextera Energy Inc. Sold out 0.00% −0.66
EOSE Eos Energy Enterprises Inc. Reduce -56.2% 0.15% −0.57
WBD Warner Bros Discovery Inc. Sold out 0.00% −0.57
COIN Coinbase Global Inc. Class A Sold out 0.00% −0.57
CMCSA Comcast Corp. Class A Reduce -84.9% 0.11% −0.55
NEM Newmont Corp. Sold out 0.00% −0.55
GDX Vaneck Gold Miners ETF Reduce -91.3% 0.06% −0.54
BA The Boeing Co. Sold out 0.00% −0.54
WULF Terawulf Inc. Reduce -84.1% 0.14% −0.49
AZO AutoZone Inc. Sold out 0.00% −0.49
CRM Salesforce Inc. Sold out 0.00% −0.47
MRVL Marvell Technology Inc. Reduce -83.8% 0.12% −0.46
ECHO Echostar Corp. Class A Sold out 0.00% −0.44
DELL Dell Technologies -C Reduce -93.2% 0.05% −0.43
SNDK Sandisk Corp. Reduce -97.6% 0.03% −0.41
CEG Constellation Energy Reduce -86.0% 0.05% −0.39
CRWV Coreweave Inc. Class A Reduce -81.8% 0.11% −0.38
BSX Boston Scientific Corp. Sold out 0.00% −0.38
MU Micron Technology Inc. Sold out 0.00% −0.37
GS Goldman Sachs Group Inc. Sold out 0.00% −0.37
FCX Freeport-McMoran Inc. Reduce -56.8% 0.45% −0.36
AGQ Proshares Ultra Silver Sold out 0.00% −0.36
BKNG Booking Holdings Inc. Reduce -35.1% 0.44% −0.34
CAR Avis Budget Group Inc. Sold out 0.00% −0.34
ARM Arm Holdings PLC-ADR Reduce -79.5% 0.15% −0.32
LUV Southwest Airlines Co. Sold out 0.00% −0.31
CFLT Confluent Inc. Class A Sold out 0.00% −0.30
NU Nu Holdings Ltd./Cayman Isl-A Reduce -72.7% 0.10% −0.30
LYFT LYFT Inc. Class A Sold out 0.00% −0.30
QBTS D-Wave Quantum Inc. Reduce -99.9% 0.00% −0.28
LULU Lululemon Athletica Inc. Reduce -57.3% 0.15% −0.28
SNOW Snowflake Inc. Reduce -64.6% 0.10% −0.28
MMM 3M Co. Reduce -84.1% 0.05% −0.28
CI The Cigna Group Reduce -29.9% 0.81% −0.27
UAL United Airlines Holdings Inc. Sold out 0.00% −0.27
ANF Abercrombie & Fitch Co. Class A Reduce -98.1% 0.00% −0.25
BJ Bj's Wholesale Club Holdings Sold out 0.00% −0.24

Portfolio Buys Q4 2025 → Q1 2026

AMZN Amazon.com Inc. New 4.93% +4.93
NVDA Nvidia Corp. Add +103.7% 8.15% +4.26
TSM Taiwan Semiconductor-SP ADR New 3.68% +3.68
GLD SPDR Gold Shares New 3.07% +3.07
META Meta Platforms Inc. Class A Add +266.8% 4.07% +2.91
SPY SS SPDR S&P 500 ETF Trust-US Add +131.7% 4.08% +2.40
GOOGL Alphabet Inc. Class A Add +664.3% 2.64% +2.30
TLT iShares 20+ Year Treasury BD New 1.63% +1.63
ORCL Oracle Corp. Add +291.7% 2.34% +1.62
UNH Unitedhealth Group Inc. Add +210.1% 2.41% +1.55
AMD Advanced Micro Devices Add +361.5% 1.64% +1.30
USO United States Oil Fund LP New 1.30% +1.30
LITE Lumentum Holdings Inc. Add +198.0% 1.15% +0.96
GOOG Alphabet Inc. Class C Add +199.7% 1.29% +0.86
URA Global X Uranium ETF New 0.70% +0.70
LQD Ishr Ibx Usd Invgd CB ETF-Ui New 0.70% +0.70
ASML ASML Holding NV-NY Reg SHS New 0.68% +0.68
MSFT Microsoft Corp. Add +93.6% 1.57% +0.61
PEP Pepsico Inc. New 0.58% +0.58
XLF SS Financial Select Sector Add +834.2% 0.54% +0.48
XLB SS Materials Select Sector Add +233.7% 0.57% +0.43
CHTR Charter Communications Inc. Class A New 0.42% +0.42
DOW Dow Inc. Add +54.5% 0.59% +0.39
UNP Union Pacific Corp. Add +2483.9% 0.41% +0.39
SLB SLB Ltd. Add +14.2% 0.87% +0.35
SMH Vaneck Semiconductor ETF Add +20.7% 1.11% +0.33
ALAB Astera Labs Inc. New 0.31% +0.31
QQQ Invesco QQQ Trust Series 1 New 0.29% +0.29
ESLT Elbit Systems Ltd. Add +1246.6% 0.29% +0.28
MRNA Moderna Inc. Add +144.8% 0.35% +0.27
AXTI Axt Inc. Add +97.9% 0.31% +0.27
GEV GE Vernova Inc. Add +57.8% 0.46% +0.26
CP Canadian Pacific Kansas City New 0.22% +0.22
CAMT Camtek Ltd. New 0.20% +0.20
DAL Delta Air Lines Inc. New 0.20% +0.20
ADI Analog Devices Inc. Add +568.0% 0.22% +0.19
PEN Penumbra Inc. Add +13530.0% 0.18% +0.18
MSTR Strategy Inc. New 0.18% +0.18
COPX Global X Copper Miners ETF New 0.18% +0.18
KKR KKR & Co. Inc. New 0.17% +0.17
XLY SS Consumer Disc Select Sect New 0.17% +0.17
STZ Constellation Brands Inc. Class A Add +749.5% 0.17% +0.16
FXI iShares China Large-Cap ETF Add +569.8% 0.18% +0.15
NCLH Norwegian Cruise Line Holdin New 0.15% +0.15
NKE Nike Inc. Class B Add +42.6% 0.65% +0.15
IEF iShares 7-10 Year Treasury B New 0.15% +0.15
KGS Kodiak Gas Services Inc. Add +362.8% 0.17% +0.15
TMO Thermo Fisher Scientific Inc. New 0.14% +0.14
MOS The Mosaic Co. New 0.14% +0.14
AG First Majestic Silver Corp. Add +2279.3% 0.15% +0.14

Options Activity Q4 2025 → Q1 2026

STATE STR SPDR S&P 500 ETF T put Add +2.2% 42,147,900 $27.4B
STATE STR SPDR S&P 500 ETF T call Add +11.4% 21,650,100 $14.1B
INVESCO QQQ TR put Reduce -26.8% 11,252,400 $6.5B
INVESCO QQQ TR call Add +8.8% 10,378,200 $6.0B
ISHARES TR put Add +2.0% 34,218,500 $5.1B
ISHARES TR call Add +28.0% 33,449,000 $3.9B
TESLA INC call Reduce -21.3% 9,196,400 $3.4B
NVIDIA CORPORATION put Reduce -27.1% 19,209,500 $3.4B
NVIDIA CORPORATION call Reduce -33.5% 19,080,700 $3.3B
TESLA INC put Reduce -35.3% 8,312,400 $3.1B
SPDR GOLD TR call Reduce -14.5% 5,490,500 $2.4B
META PLATFORMS INC call Reduce -10.8% 4,109,700 $2.4B
APPLE INC call Reduce -5.7% 8,760,100 $2.2B
ALPHABET INC call Reduce -19.5% 7,197,200 $2.1B
SPDR GOLD TR put Reduce -7.7% 3,830,900 $1.6B
MICROSOFT CORP call Add +35.4% 4,178,400 $1.5B
APPLE INC put Reduce -22.2% 6,022,900 $1.5B
AMAZON COM INC call Add +19.4% 7,000,500 $1.5B
ALPHABET INC put Reduce -31.3% 5,053,100 $1.5B
META PLATFORMS INC put Add +3.1% 2,501,500 $1.4B
ISHARES SILVER TR call Add +11.7% 19,990,100 $1.4B
SELECT SECTOR SPDR TR put Reduce -8.4% 15,375,700 $1.0B
AMAZON COM INC put Add +0.7% 4,388,700 $914.0M
MICROSOFT CORP put Add +5.5% 2,366,200 $875.9M
VANECK ETF TRUST put Reduce -30.8% 3,276,100 $820.0M
SELECT SECTOR SPDR TR call Add +12.7% 12,980,200 $773.4M
NETFLIX INC. put Reduce -24.8% 7,568,800 $727.7M
ISHARES SILVER TR put Reduce -6.8% 10,536,200 $717.9M
MICRON TECHNOLOGY INC put Add +21.6% 2,117,000 $715.2M
NETFLIX INC. call Reduce -23.8% 7,413,400 $712.8M
PALANTIR TECHNOLOGIES INC put Reduce -20.1% 4,851,200 $709.6M
ADVANCED MICRO DEVICES INC put Reduce -8.1% 3,480,900 $708.1M
MICRON TECHNOLOGY INC call Add +44.8% 2,027,800 $685.1M
STATE STR SPDR DOW JONES IND call Add +113.9% 1,468,000 $680.0M
BROADCOM INC put Reduce -42.7% 2,097,100 $649.1M
ADVANCED MICRO DEVICES INC call Reduce -35.5% 2,947,600 $599.6M
PALANTIR TECHNOLOGIES INC call Reduce -35.4% 3,985,500 $583.0M
BROADCOM INC call Reduce -35.4% 1,679,500 $519.8M
UNITEDHEALTH GROUP INC call Reduce -31.2% 1,919,000 $519.3M
STRATEGY INC put Add +7.8% 4,152,700 $517.5M
ISHARES TR put Add +18.7% 6,323,600 $509.2M
ISHARES BITCOIN TRUST ETF call Reduce -26.4% 13,159,700 $505.6M
TAIWAN SEMICONDUCTOR MANUFAC put New 1,475,000 $498.5M
UNITED STS OIL FD LP put Add +531.2% 3,279,200 $417.3M
VANECK ETF TRUST call Add +6.9% 2,710,700 $401.3M
ORACLE CORP put Add +16.7% 2,604,900 $383.2M
ISHARES BITCOIN TRUST ETF put Add +14.7% 9,930,300 $381.5M
ORACLE CORP call Reduce -16.9% 2,392,600 $352.0M
ISHARES INC call Add +71.7% 6,594,400 $340.8M
ALIBABA GROUP HLDG LTD put Add +3.8% 2,657,200 $333.4M

Showing the first 50 of 6,779.

Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 2,733$3.8BNVDA, IWM, TLT, GOOGL, SOXX
Q1 2026 2,613$3.2BNVDA, AMZN, SPY, META, TSM
Q4 2025 2,449$3.6BAAPL, NVDA, AVGO, NFLX, SPY
Q3 2025 2,622$4.5BNVDA, AAPL, MSFT, IWM, UNH
Q2 2025 2,428$3.7BNVDA, AAPL, AVGO, TLT, GOOGL
Q1 2025 2,403$2.8BTLT, NVDA, GOOGL, TSM, INTC
Q4 2024 2,442$3.5BAAPL, MSTR, INTC, NVDA, BABA
Q3 2024 2,294$3.0BNVDA, PDD, BABA, BA, KWEB
Q2 2024 2,401$3.1BNVDA, AVGO, INTC, C, PFE
Q1 2024 2,382$3.4BPFE, XLE, BA, INTC, TSM