Simplex Trading, LLC

In its 13F for Q2 2026 (holdings as of June 30, 2026, filed August 12, 2026), Simplex Trading, LLC reported 2,733 stock positions worth $3.8 billion. Its top holding was Nvidia (NVDA) at 7.9% of the portfolio, followed by iShares Russell 2000 ETF (IWM, 4.2%) and iShares 20+ Year Treasury BD (TLT, 4.2%). Compared with Q1 2026, it opened 1,033 new positions, sold out of 913, added to 874 and reduced 822. The biggest buy was iShares Russell 2000 ETF (IWM, shares +3208%) and the biggest sale Meta Platforms Class A (META, shares −74%).

Most Recent 13F
Q2 2026
Location
CHICAGO, IL
CIK
0001488542
Portfolio Value
$3.8B (Q2 2026)
SEC Filing
0001488542-26-000011 ↗ filed Aug 12, 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 Q1 2026 Q2 2026: $3.8B $3.8B Q2 2026

Holdings 2,733 stocks · $3.8B

NVDA Nvidia Corp. 7.94% 1,520,692 $304.3M Add +0.8%
IWM iShares Russell 2000 ETF 4.21% 536,810 $161.3M Add +3207.7%
TLT iShares 20+ Year Treasury BD 4.19% 1,860,997 $160.8M Add +206.1%
GOOGL Alphabet Inc. Class A 3.43% 368,241 $131.6M Add +24.3%
SOXX iShares Semiconductor ETF 2.70% 161,532 $103.5M Add +38.9%
AMZN Amazon.com Inc. 2.52% 405,198 $96.6M Reduce -47.0%
ORCL Oracle Corp. 2.17% 567,292 $83.1M Add +10.2%
AAPL Apple Inc. 1.96% 259,549 $75.1M Add +552.4%
MSFT Microsoft Corp. 1.92% 197,528 $73.7M Add +44.5%
TSM Taiwan Semiconductor-SP ADR 1.84% 147,407 $70.4M Reduce -58.1%
TSLA Tesla Inc. 1.65% 150,665 $63.4M Add +646.7%
MU Micron Technology Inc. 1.59% 52,682 $60.8M New
USO United States Oil Fund LP 1.36% 490,737 $52.2M Add +48.8%
GOOG Alphabet Inc. Class C 1.36% 147,687 $52.2M Add +1.6%
DRAM Roundhill Memory ETF 1.20% 625,556 $46.2M New
SPY SS SPDR S&P 500 ETF Trust-US 1.04% 53,496 $39.9M Reduce -73.6%
FCX Freeport-McMoran Inc. 1.03% 626,805 $39.4M Add +156.1%
KLAC KLA Corp. 0.97% 123,044 $37.1M Add +2580.7%
SOXL Direx Dail Semi Bu 3X Et-Usd 0.96% 138,147 $36.8M New
META Meta Platforms Inc. Class A 0.89% 60,293 $34.0M Reduce -73.8%
ASML ASML Holding NV-NY Reg SHS filed as ASML HLDG NV 0.85% 16,406 $32.6M Reduce -2.0%
AVGO Broadcom Inc. 0.83% 84,040 $31.7M Add +94.3%
NOW ServiceNow Inc. 0.76% 291,808 $29.0M Add +202.0%
MRVL Marvell Technology Inc. 0.74% 94,668 $28.2M Add +138.5%
GLD SPDR Gold Shares 0.73% 76,477 $28.2M Reduce -66.8%
UNH Unitedhealth Group Inc. 0.71% 65,879 $27.4M Reduce -77.1%
GEV GE Vernova Inc. 0.62% 20,352 $23.9M Add +20.4%
PLTR Palantir Technologies Inc. Class A 0.61% 201,696 $23.5M Reduce -12.8%
AMAT Applied Materials Inc. 0.61% 32,303 $23.4M Add +174.8%
GLW Corning Inc. 0.60% 90,456 $23.1M Add +90.8%
SOFI Sofi Technologies Inc. 0.55% 1,181,860 $21.2M Add +22.0%
AMD Advanced Micro Devices 0.55% 36,092 $21.0M Reduce -86.2%
COIN Coinbase Global Inc. Class A 0.49% 129,499 $18.9M New
QCOM Qualcomm Inc. 0.45% 93,992 $17.4M New
IBM Intl Business Machines Corp. filed as INTERNATIONAL BUSINESS MACHS 0.42% 57,427 $16.1M New
PFE Pfizer Inc. 0.40% 640,977 $15.4M Reduce -49.4%
CHTR Charter Communications Inc. Class A 0.39% 104,727 $14.9M Add +67.4%
NOK Nokia Corp.-Spon ADR 0.37% 1,081,936 $14.4M New
GE General Electric filed as GE AEROSPACE 0.36% 37,191 $13.9M New
NKE Nike Inc. Class B 0.36% 333,475 $13.7M Reduce -16.3%
TMF Dir DLY 20+YR TR BL3X ETF-Ui 0.34% 369,781 $13.1M Add +113.7%
HUT Hut 8 Corp. 0.33% 109,022 $12.6M New
URA Global X Uranium ETF 0.33% 287,766 $12.6M Reduce -38.8%
LOW Lowe's Cos Inc. 0.32% 56,496 $12.5M Add +1791.4%
BKNG Booking Holdings Inc. 0.31% 67,550 $12.0M Reduce -19.1%
LITE Lumentum Holdings Inc. 0.29% 12,958 $11.1M Reduce -75.5%
TMUS T-Mobile US Inc. 0.28% 64,753 $10.9M New
MRNA Moderna Inc. 0.28% 154,558 $10.8M Reduce -29.6%
XLU St Sr Utl SL SE SPDR ETF-Usd 0.28% 233,426 $10.6M New
COHR Coherent Corp. 0.28% 26,782 $10.6M Add +156.4%
COST Costco Wholesale Corp. 0.27% 11,161 $10.4M New
KRE SS SPDR S&P Regional Bank 0.27% 139,288 $10.4M New
SNDK Sandisk Corp. 0.27% 4,518 $10.3M Add +190.0%
GDX Vaneck Gold Miners ETF 0.26% 133,483 $10.1M Add +518.2%
TTWO Take-Two Interactive Softwre 0.26% 40,136 $10.0M New
MO Altria Group Inc. 0.25% 135,419 $9.7M Add +233.0%
ASTS Ast Spacemobile Inc. 0.25% 108,871 $9.7M Add +93.5%
DOW Dow Inc. filed as DOW HLDGS INC 0.24% 343,384 $9.4M Reduce -25.2%
OSCR Oscar Health Inc. Class A 0.24% 325,509 $9.3M Reduce -42.4%
QQQ Invesco QQQ Trust Series 1 0.24% 12,600 $9.3M Reduce -22.7%
CI The Cigna Group 0.24% 33,324 $9.2M Reduce -66.1%
CMCSA Comcast Corp. Class A 0.24% 370,028 $9.1M Add +212.6%
FTNT Fortinet Inc. 0.24% 59,034 $9.1M Add +54.0%
VST Vistra Corp. 0.23% 56,502 $9.0M Add +319.9%
DIA SS SPDR Dow Jones Indus Avg filed as STATE STR SPDR DOW JONES IND 0.22% 16,391 $8.6M New
ABT Abbott Laboratories 0.22% 91,699 $8.3M New
KEEL Keel Infrastructure Corp. 0.20% 1,366,617 $7.8M Add +3.4%
AKAM Akamai Technologies Inc. 0.20% 65,275 $7.7M Add +254.7%
WDC Western Digital Corp. 0.19% 11,430 $7.3M Add +97.6%
EOSE Eos Energy Enterprises Inc. 0.19% 1,240,664 $7.3M Add +26.0%
BIDU Baidu Inc. - Spon ADR 0.19% 63,798 $7.3M New
IBIT iShares Bitcoin Trust ETF 0.18% 203,178 $6.8M Add +5.3%
KORU Direxion DLY M SK Bull 3X-Ui 0.17% 8,585 $6.7M Add +165.8%
FSLR First Solar Inc. 0.17% 27,934 $6.6M New
VSH Vishay Intertechnology Inc. 0.17% 121,073 $6.5M Add +13549.7%
HOOD Robinhood Markets Inc. Class A 0.17% 64,451 $6.5M New
FBTC Fidelity Wise Origin Bitcoin 0.16% 123,438 $6.3M Add +74.6%
ZTS Zoetis Inc. 0.16% 87,334 $6.3M Add +16.9%
OKTA Okta Inc. 0.16% 45,957 $6.3M Reduce -40.2%
XLK SS Technology Select Sector 0.16% 32,789 $6.2M Add +10.4%
B Barrick Mining Corp. 0.16% 167,449 $6.2M Reduce -43.8%
XLY SS Consumer Disc Select Sect 0.16% 52,381 $6.1M Add +2.3%
DUOL Duolingo 0.16% 53,120 $6.1M Add +70.3%
NET Cloudflare Inc. Class A 0.16% 24,408 $6.0M New
UAL United Airlines Holdings Inc. 0.16% 43,847 $6.0M New
PYPL PayPal Holdings Inc. 0.15% 136,916 $5.9M Add +996.4%
TEVA Teva Pharmaceutical-SP ADR 0.15% 174,409 $5.9M Add +1441.4%
SILJ Amplify Junior Silver Miners 0.15% 226,049 $5.9M Add +44.6%
ABNB Airbnb Inc. Class A 0.15% 40,829 $5.8M New
AMT American Tower Corp. 0.15% 35,639 $5.8M Add +51.6%
BMY Bristol-Myers Squibb Co. 0.15% 100,185 $5.8M New
APLD Applied Digital Corp. 0.15% 151,952 $5.7M Add +121.1%
CAH Cardinal Health Inc. 0.15% 23,835 $5.7M Reduce -7.3%
NASA Tema Space Innovators ETF 0.15% 185,610 $5.6M New
ACMR Acm Research Inc. Class A 0.15% 44,316 $5.6M Add +81.2%
MELI MercadoLibre Inc. 0.14% 3,247 $5.5M Add +30.0%
NBIS Nebius Group NV 0.14% 19,803 $5.5M Add +680.6%
DASH DoorDash Inc. Class A 0.14% 29,297 $5.4M New
OKLO Oklo Inc. 0.14% 103,032 $5.4M New
PEP Pepsico Inc. 0.14% 39,506 $5.3M Reduce -67.5%

Show all 2,733 holdings

Options reported separately and not counted above: STATE STR SPDR S&P 500 ETF T puts ($24.9B), STATE STR SPDR S&P 500 ETF T calls ($17.0B), INVESCO QQQ TR puts ($10.1B), INVESCO QQQ TR calls ($8.0B), ISHARES TR puts ($7.8B), MICRON TECHNOLOGY INC puts ($3.6B), NVIDIA CORPORATION calls ($3.5B), ISHARES TR calls ($3.3B), NVIDIA CORPORATION puts ($3.3B), TESLA INC calls ($2.9B), TESLA INC puts ($2.4B), ALPHABET INC calls ($2.4B), and 6409 more.

Portfolio Sells Q1 2026 → Q2 2026

META Meta Platforms Inc. Class A Reduce -73.8% 0.89% −3.18
SPY SS SPDR S&P 500 ETF Trust-US Reduce -73.6% 1.04% −3.04
AMZN Amazon.com Inc. Reduce -47.0% 2.52% −2.41
GLD SPDR Gold Shares Reduce -66.8% 0.73% −2.34
TSM Taiwan Semiconductor-SP ADR Reduce -58.1% 1.84% −1.84
UNH Unitedhealth Group Inc. Reduce -77.1% 0.71% −1.69
SMH Vaneck Semiconductor ETF Sold out 0.00% −1.11
AMD Advanced Micro Devices Reduce -86.2% 0.55% −1.09
INTC Intel Corp. Sold out 0.00% −1.03
SLB SLB Ltd. Sold out 0.00% −0.87
LITE Lumentum Holdings Inc. Reduce -75.5% 0.29% −0.86
LQD Ishr Ibx Usd Invgd CB ETF-Ui Sold out 0.00% −0.70
PFE Pfizer Inc. Reduce -49.4% 0.40% −0.70
CI The Cigna Group Reduce -66.1% 0.24% −0.57
XLB SS Materials Select Sector Sold out 0.00% −0.57
NFLX Netflix Inc. Sold out 0.00% −0.55
XLF SS Financial Select Sector Sold out 0.00% −0.54
NVO Novo-Nordisk A/S-Spons ADR Sold out 0.00% −0.45
PEP Pepsico Inc. Reduce -67.5% 0.14% −0.44
PLTR Palantir Technologies Inc. Class A Reduce -12.8% 0.61% −0.43
UNP Union Pacific Corp. Sold out 0.00% −0.41
URA Global X Uranium ETF Reduce -38.8% 0.33% −0.38
MS Morgan Stanley Sold out 0.00% −0.37
DOW Dow Inc. Reduce -25.2% 0.24% −0.34
AXTI Axt Inc. Reduce -97.7% 0.01% −0.30
NKE Nike Inc. Class B Reduce -16.3% 0.36% −0.29
BABA Alibaba Group Holding-SP ADR Sold out 0.00% −0.26
IREN Iren Ltd. Sold out 0.00% −0.22
B Barrick Mining Corp. Reduce -43.8% 0.16% −0.22
ADI Analog Devices Inc. Reduce -96.5% 0.01% −0.21
DAL Delta Air Lines Inc. Sold out 0.00% −0.20
CAMT Camtek Ltd. Reduce -98.1% 0.00% −0.20
APGE Apogee Therapeutics Inc. Reduce -97.0% 0.01% −0.19
SQQQ Proshares Ultrapro Short QQQ Reduce -68.0% 0.03% −0.19
ETHA iShares Ethereum Trust ETF Sold out 0.00% −0.19
ALAB Astera Labs Inc. Reduce -89.1% 0.13% −0.19
ESLT Elbit Systems Ltd. Reduce -51.3% 0.11% −0.18
MSTR Strategy Inc. Sold out 0.00% −0.18
MOG.A Moog Inc. Class A Reduce -98.8% 0.00% −0.18
FXI iShares China Large-Cap ETF Sold out 0.00% −0.18
PEN Penumbra Inc. Reduce -89.6% 0.02% −0.16
IEF iShares 7-10 Year Treasury B Sold out 0.00% −0.15
LULU Lululemon Athletica Inc. Sold out 0.00% −0.15
SNAP Snap Inc. Class A Reduce -50.4% 0.10% −0.15
KGS Kodiak Gas Services Inc. Reduce -87.8% 0.02% −0.15
PRMB Primo Brands Corp. Sold out 0.00% −0.14
SLVR Sprott SLVR Miner & PHY SLVR Reduce -77.6% 0.03% −0.13
CCJ Cameco Corp. Reduce -62.8% 0.06% −0.13
UPS United Parcel Service Class B Sold out 0.00% −0.13
FHN First Horizon Corp. Sold out 0.00% −0.13

Portfolio Buys Q1 2026 → Q2 2026

IWM iShares Russell 2000 ETF Add +3207.7% 4.21% +4.08
TLT iShares 20+ Year Treasury BD Add +206.1% 4.19% +2.56
AAPL Apple Inc. Add +552.4% 1.96% +1.65
MU Micron Technology Inc. New 1.59% +1.59
SOXX iShares Semiconductor ETF Add +38.9% 2.70% +1.52
TSLA Tesla Inc. Add +646.7% 1.65% +1.42
DRAM Roundhill Memory ETF New 1.20% +1.20
SOXL Direx Dail Semi Bu 3X Et-Usd New 0.96% +0.96
KLAC KLA Corp. Add +2580.7% 0.97% +0.95
GOOGL Alphabet Inc. Class A Add +24.3% 3.43% +0.79
MRVL Marvell Technology Inc. Add +138.5% 0.74% +0.61
FCX Freeport-McMoran Inc. Add +156.1% 1.03% +0.58
COIN Coinbase Global Inc. Class A New 0.49% +0.49
AMAT Applied Materials Inc. Add +174.8% 0.61% +0.48
QCOM Qualcomm Inc. New 0.45% +0.45
NOW ServiceNow Inc. Add +202.0% 0.76% +0.44
IBM Intl Business Machines Corp. New 0.42% +0.42
AVGO Broadcom Inc. Add +94.3% 0.83% +0.41
GLW Corning Inc. Add +90.8% 0.60% +0.40
NOK Nokia Corp.-Spon ADR New 0.37% +0.37
GE General Electric New 0.36% +0.36
MSFT Microsoft Corp. Add +44.5% 1.92% +0.36
HUT Hut 8 Corp. New 0.33% +0.33
LOW Lowe's Cos Inc. Add +1791.4% 0.32% +0.30
TMUS T-Mobile US Inc. New 0.28% +0.28
XLU St Sr Utl SL SE SPDR ETF-Usd New 0.28% +0.28
COST Costco Wholesale Corp. New 0.27% +0.27
KRE SS SPDR S&P Regional Bank New 0.27% +0.27
TTWO Take-Two Interactive Softwre New 0.26% +0.26
SNDK Sandisk Corp. Add +190.0% 0.27% +0.24
DIA SS SPDR Dow Jones Indus Avg New 0.22% +0.22
ABT Abbott Laboratories New 0.22% +0.22
GDX Vaneck Gold Miners ETF Add +518.2% 0.26% +0.20
COHR Coherent Corp. Add +156.4% 0.28% +0.20
BIDU Baidu Inc. - Spon ADR New 0.19% +0.19
FSLR First Solar Inc. New 0.17% +0.17
VST Vistra Corp. Add +319.9% 0.23% +0.17
MO Altria Group Inc. Add +233.0% 0.25% +0.17
VSH Vishay Intertechnology Inc. Add +13549.7% 0.17% +0.17
HOOD Robinhood Markets Inc. Class A New 0.17% +0.17
GEV GE Vernova Inc. Add +20.4% 0.62% +0.17
NET Cloudflare Inc. Class A New 0.16% +0.16
UAL United Airlines Holdings Inc. New 0.16% +0.16
ABNB Airbnb Inc. Class A New 0.15% +0.15
BMY Bristol-Myers Squibb Co. New 0.15% +0.15
TMF Dir DLY 20+YR TR BL3X ETF-Ui Add +113.7% 0.34% +0.15
NASA Tema Space Innovators ETF New 0.15% +0.15
KORU Direxion DLY M SK Bull 3X-Ui Add +165.8% 0.17% +0.15
TEVA Teva Pharmaceutical-SP ADR Add +1441.4% 0.15% +0.14
WDC Western Digital Corp. Add +97.6% 0.19% +0.14

Options Activity Q1 2026 → Q2 2026

STATE STR SPDR S&P 500 ETF T put Reduce -20.7% 33,407,300 $24.9B
STATE STR SPDR S&P 500 ETF T call Add +5.0% 22,725,000 $17.0B
INVESCO QQQ TR put Add +22.3% 13,765,500 $10.1B
INVESCO QQQ TR call Add +5.1% 10,904,800 $8.0B
ISHARES TR put Add +15.1% 39,367,200 $7.8B
MICRON TECHNOLOGY INC put Add +48.4% 3,140,900 $3.6B
NVIDIA CORPORATION call Reduce -8.2% 17,519,600 $3.5B
ISHARES TR call Reduce -19.5% 26,912,500 $3.3B
NVIDIA CORPORATION put Reduce -14.7% 16,385,300 $3.3B
TESLA INC call Reduce -23.9% 7,001,500 $2.9B
TESLA INC put Reduce -30.2% 5,799,800 $2.4B
ALPHABET INC call Reduce -7.5% 6,656,100 $2.4B
APPLE INC call Reduce -6.8% 8,168,800 $2.4B
MICRON TECHNOLOGY INC call Reduce -6.0% 1,906,800 $2.2B
META PLATFORMS INC call Reduce -11.9% 3,620,200 $2.0B
SANDISK CORP put Add +202.1% 864,500 $2.0B
ADVANCED MICRO DEVICES INC put Reduce -3.0% 3,374,900 $2.0B
ALPHABET INC put Add +7.4% 5,428,100 $1.9B
MICROSOFT CORP call Add +11.4% 4,655,800 $1.7B
APPLE INC put Reduce -1.1% 5,954,700 $1.7B
ADVANCED MICRO DEVICES INC call Add +0.1% 2,951,000 $1.7B
VANECK ETF TRUST put Add +21.1% 3,966,700 $1.6B
SPDR GOLD TR call Reduce -28.3% 3,937,600 $1.5B
AMAZON COM INC call Reduce -25.4% 5,219,400 $1.2B
META PLATFORMS INC put Reduce -16.7% 2,084,500 $1.2B
SELECT SECTOR SPDR TR put Reduce -15.5% 12,991,800 $963.2M
MICROSOFT CORP put Add +2.5% 2,425,900 $904.9M
SELECT SECTOR SPDR TR call Reduce -4.1% 12,448,000 $883.0M
AMAZON COM INC put Reduce -20.6% 3,486,200 $830.9M
VANECK ETF TRUST call Add +20.6% 3,268,100 $804.7M
STATE STR SPDR DOW JONES IND call Add +2.4% 1,503,000 $785.2M
BROADCOM INC put Reduce -4.8% 1,997,300 $754.5M
INTEL CORP put Add +29.0% 5,334,900 $744.9M
SPDR GOLD TR put Reduce -47.6% 2,008,600 $739.9M
INTEL CORP call Reduce -24.8% 5,185,300 $724.0M
BROADCOM INC call Add +9.6% 1,841,100 $695.5M
TAIWAN SEMICONDUCTOR MANUFAC put Reduce -10.5% 1,320,000 $630.4M
SANDISK CORP call Reduce -1.4% 258,700 $588.2M
ISHARES SILVER TR call Reduce -45.4% 10,916,100 $583.7M
PALANTIR TECHNOLOGIES INC put Reduce -3.3% 4,692,000 $547.4M
NETFLIX INC. call Add +0.2% 7,425,500 $530.2M
UNITEDHEALTH GROUP INC call Reduce -36.3% 1,223,100 $508.4M
NETFLIX INC. put Reduce -12.2% 6,642,600 $474.3M
PALANTIR TECHNOLOGIES INC call Reduce -8.9% 3,628,900 $423.4M
ISHARES BITCOIN TRUST ETF call Reduce -5.3% 12,461,100 $414.8M
UNITEDHEALTH GROUP INC put Reduce -15.9% 976,200 $405.7M
SPACE EXPLORATION TECHN CORP call New 2,348,600 $401.3M
MARVELL TECHNOLOGY INC put Add +33.4% 1,326,300 $395.1M
ORACLE CORP put Add +0.6% 2,619,100 $383.8M
DIREXION SHS ETF TR put Reduce -36.1% 1,621,800 $383.2M

Showing the first 50 of 6,810.

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