Simplex Trading, LLC 13F Portfolio

CIK 1488542 Filing since Q4 2014 Q2 2026 filed Aug 12, 2026
Holdings as of Jun 30, 2026, from the 13F filed Aug 12, 2026.

Portfolio Snapshot

1,946 positions · Q2 2026

Simplex Trading, LLC reported 1,946 positions worth $3.00B for the quarter ended Jun 30, 2026, up 12.8% on the prior quarter. It opened 697 new positions, added to 647, trimmed 600 and exited 633. Its largest holding is Nvidia Corp at 10.2% of the portfolio.

Portfolio Value
$3.00B
+12.8% QoQ · -0.8% YoY
Positions
1,946
697 new · 633 sold out
Top 10 Concentration
33.7%
of portfolio value
Largest Position
NVDA 10.2%
Nvidia Corp
Net Buying
-$100.46M
$1.28B bought · $1.39B sold
Turnover
45.4%
of the portfolio traded
Top Sector
Technology
52.3% of value
Track Record
47
quarters on file since Q4 2014

Portfolio Value & Positions

Value Positions

Reported 13F market value at each quarter end. A change mixes trading with price moves in the positions held.

Sector Allocation

12 sectors
52.3%
Technology

Quarterly Buying & Selling

Bought Sold

Dollar value of shares bought and sold each quarter, at that quarter’s price. It counts trading only, not price changes.

Position Changes

How many positions were opened, added to, trimmed or closed each quarter.

Sector Allocation Over Time

Share of reported value in each sector at every quarter end.

Largest Buys

Q2 2026
Holding Change Change % Trade Value Weight
AAPL Apple Inc. +219.8K +552.4% $63.59M 2.51%
MU Micron Technology Inc +52.7K – $60.81M 2.03%
TSLA Tesla, Inc. +130.5K +646.7% $54.88M 2.11%
KLAC Kla Corp +118.5K +2,580.7% $35.74M 1.24%
GOOGL Alphabet Inc. +71.9K +24.3% $25.70M 4.39%
FCX Freeport-Mcmoran Inc +382.1K +156.1% $24.03M 1.31%
MSFT Microsoft Corp +60.8K +44.5% $22.68M 2.46%
NOW ServiceNow, Inc. +195.2K +202.0% $19.38M 0.966%
COIN Coinbase Global, Inc. +129.5K – $18.93M 0.632%
QCOM Qualcomm Inc +94.0K – $17.37M 0.579%

Largest Sells

Q2 2026
Holding Change Change % Trade Value Weight
AMD Advanced Micro Devices Inc -224.5K -86.2% $130.43M 0.699%
TSM Taiwan Semiconductor Manufacturing Co Ltd -204.4K -58.1% $97.61M 2.35%
META Meta Platforms, Inc. -169.6K -73.8% $95.51M 1.13%
UNH Unitedhealth Group Inc -221.7K -77.1% $92.15M 0.913%
AMZN Amazon Com Inc -359.7K -47.0% $85.73M 3.22%
GLD Spdr Gold Trust -154.1K -66.8% $56.78M 0.94%
ALAB Astera Labs, Inc. -81.9K -89.1% $39.54M 0.161%
LITE Lumentum Holdings Inc. -39.8K -75.5% $34.19M 0.371%
INTC Intel Corp -757.7K -100.0% $33.44M Exited
SLB Slb Limited -547.1K -100.0% $28.12M Exited

New Positions

Q2 2026
Holding Shares Trade Value Weight
MU Micron Technology Inc +52.7K $60.81M 2.03%
COIN Coinbase Global, Inc. +129.5K $18.93M 0.632%
QCOM Qualcomm Inc +94.0K $17.37M 0.579%
IBM International Business Machines Corp +57.4K $16.15M 0.539%
NOK Nokia Corp +1.08M $14.37M 0.479%
GE General Electric Co +37.2K $13.90M 0.464%
HUT Hut 8 Corp. +109.0K $12.59M 0.42%
TMUS T-Mobile US, Inc. +64.8K $10.86M 0.362%
COST Costco Wholesale Corp +11.2K $10.44M 0.348%
TTWO Take Two Interactive Software Inc +40.1K $10.03M 0.335%

Closed Positions

Q2 2026
Holding Shares Sold Trade Value Prior Weight
INTC Intel Corp -757.7K $33.44M 1.26%
SLB Slb Limited -547.1K $28.12M 1.06%
NFLX Netflix Inc -184.9K $17.78M 0.669%
NVO Novo Nordisk A S -392.8K $14.44M 0.543%
UNP Union Pacific Corp -54.0K $13.10M 0.493%
MS Morgan Stanley -73.1K $12.03M 0.453%
BABA Alibaba Group Holding Ltd -66.7K $8.37M 0.315%
IREN IREN Ltd -207.8K $7.12M 0.268%
DAL Delta Air Lines, Inc. -98.3K $6.53M 0.246%
ETHA iShares Ethereum Trust ETF -392.7K $6.22M 0.234%
Holdings · Q2 2026

1,946 Positions

As ofJun 30, 2026
Value$3.00B
Top 1033.7%
Avg position$1.54M
# Activity
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Showing 1–15 of 1,946 positions 13F filings on SEC EDGAR

Tip. Select a row to see that position’s full history at Simplex Trading.

About Simplex Trading, LLC’s 13F Portfolio

What are Simplex Trading, LLC’s largest holdings?

As of its Q2 2026 13F filing, Simplex Trading, LLC’s five largest positions were Nvidia Corp (NVDA) at 10.2%, Alphabet Inc. (GOOGL) at 4.4%, Amazon Com Inc (AMZN) at 3.2%, Oracle Corp (ORCL) at 2.8%, Apple Inc. (AAPL) at 2.5% of the reported portfolio.

How much is Simplex Trading, LLC’s portfolio worth?

Simplex Trading, LLC reported a 13F portfolio worth $3.00B across 1,946 positions for Q2 2026. That is up 12.8% from the previous quarter.

What did Simplex Trading, LLC buy in Q2 2026?

Its largest purchases by value were Apple Inc. ($63.59M), Micron Technology Inc ($60.81M), Tesla, Inc. ($54.88M). It opened 697 new positions.

What did Simplex Trading, LLC sell in Q2 2026?

Its largest sales by value were Advanced Micro Devices Inc ($130.43M), Taiwan Semiconductor Manufacturing Co Ltd ($97.61M), Meta Platforms, Inc. ($95.51M). It exited 633 positions entirely.

Where does this data come from?

From the Form 13F-HR reports Simplex Trading, LLC files with the SEC each quarter, within 45 days of quarter end. A 13F lists long positions in US-listed equities and options; it excludes short positions, cash, bonds and most non-US holdings.

Similar-Sized Institutions

by reported 13F value

13F data reflects long positions in US-listed equities and options as reported to the SEC up to 45 days after quarter end. It excludes short positions, cash, bonds and most non-US securities, so it is not a complete picture of a manager’s assets.