Summary of SIMPLEX TRADING, LLC 13F portfolio changes for the quarter ending 2026-06-30, including new and increased positions in technology, industrial, and financial stocks.

SIMPLEX TRADING, LLC: 13F Portfolio Moves Tracked Quarterly

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Quarter Ending 2026-06-30

During the quarter ending 2026-06-30, SIMPLEX TRADING, LLC filed a 13F reflecting active repositioning across technology, industrials, and financial holdings. Notably, the fund opened two substantial new positions in SPACE EXPLORATION TECHN CORP, valued at $401,281,796 and $322,942,486, alongside a new stake in DIREXION SHARES ETF TRUST worth $36,845,186 and a new ROUNDHILL ETF TRUST position of $46,197,310. New positions were also established in CARNIVAL CORP LTD (CCL), totaling roughly $97 million combined, MICRON TECHNOLOGY INC (MU) at $60,810,305, and CEREBRAS SYSTEMS INC (CBRS) at $43,249,700.

Existing holdings saw significant expansion as well. ASTERA LABS INC (ALAB) positions grew by 631% and 582%, pushing combined exposure past $200 million. ISHARES TR stakes rose sharply, including one jump of 3907%. SERVICENOW INC (NOW) increased by 52% and 118% across two positions, while PALO ALTO NETWORKS INC (PANW) holdings expanded by 89% and 134%. TESLA INC (TSLA) exposure climbed 745%, and TEXAS INSTRS INC rose 186%. JPMORGAN CHASE & CO (JPM) increased 40% to $155,579,949, and LUMENTUM HLDGS INC (LITE) grew 90% to $188,086,752.

Collectively, these filings suggest a quarter marked by increased conviction in semiconductor, cloud software, and select industrial names, paired with fresh diversification into ETFs and aerospace-adjacent holdings. This information is derived from public 13F filings and is presented for informational purposes only; it does not constitute investment advice.

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This page follows SIMPLEX TRADING, LLC’s institutional portfolio moves as disclosed in SEC Form 13F filings, updated every quarter as new filings land. Rather than a one-off snapshot, think of this as a running log of what the fund has been adding to and building up over time, quarter by quarter, based purely on public disclosures rather than any inside knowledge of trade timing.

For the quarter ending 2026-03-31, SIMPLEX TRADING, LLC’s filing showed a mix of fresh positions and larger bets added to existing holdings, spanning chip manufacturing, energy, commodities, and a few notable single-stock and crypto-adjacent plays.

New Positions Opened

The fund opened a new position in Amazon.com Inc (AMZN) worth $159,302,390 during the quarter ending 2026-03-31, alongside fresh stakes in United States Oil Fund LP ($41,965,523), iShares Trust ($52,708,560), and SPDR Gold Trust ($99,230,037). New commodity- and crypto-adjacent exposure also showed up through Bitmine Immersion Technologies ($39,795,382) and Strive Inc (ASST) ($66,230,196). Seagate Technology Holdings appeared as a new holding across two separate lots, worth $39,254,352 and $54,689,696, while International Business Machines was similarly opened in two tranches totaling roughly $104 million ($56,525,348 and $47,653,874). Taiwan Semiconductor Manufacturing drew the largest new-money commitment of the quarter, opened across three positions worth $118,892,499, $255,152,250, and $498,476,250 respectively. Petroleo Brasileiro S.A. rounded out the new additions at $49,731,525.

Positions Increased

Beyond new positions, SIMPLEX TRADING, LLC added meaningfully to several existing holdings. Its Alphabet Inc (GOOGL) stake jumped 602%, from $12,134,384 to $85,208,341. The already-large Amazon.com Inc (AMZN) position grew a further 8%, from roughly $1.35 billion to nearly $1.46 billion, remaining one of the fund’s biggest single holdings. Goldman Sachs Group Inc (GS) increased 27% (from $180,019,200 to $229,263,290), and Chevron Corporation (CVX) rose 83%, from $84,282,730 to $154,306,020. Exxon Mobil Corp saw two separate increases, one of 117% ($124,349,102 to $269,335,250) and another of 48% ($149,358,307 to $221,525,062), pointing to sustained energy-sector conviction alongside the Chevron build-up.

Taken together, this quarter’s filing points to a fund leaning further into semiconductors, energy, and large-cap tech, while also testing newer, smaller positions in commodities and crypto-adjacent names. As with any 13F-based tracking, this reflects portfolio snapshots as of the filing date, not specific trade dates, and is shared for informational tracking purposes only, not as investment advice. Check back next quarter for the latest update to SIMPLEX TRADING, LLC’s holdings.

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Source: SEC Form 13F filings. This page updates every quarter.

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