Terminal · Institutions

Every 13F-reported equity position this quarter, with its quarter-over-quarter change — each row traces back to the SEC filing.

SIMPLEX TRADING, LLC 13F Holdings -- Portfolio & Top Positions (2026-06-30)

SIMPLEX TRADING, LLC (CIK 1488542) reported $170.57B across 2,733 reported positions in its SEC 13F filing for 2026-06-30. Largest positions: SPY ($24.95B, 14.63%), SPY ($16.97B, 9.95%), QQQ ($10.14B, 5.94%), QQQ ($8.03B, 4.71%), ILCG ($7.76B, 4.55%). Source: SEC Form 13F.

RankTickerCompanyValue% PortfolioSharesAction
1SPYSTATE STR SPDR S&P 500 ETF T$24.95B14.63%33.4MTrimmed
2SPYSTATE STR SPDR S&P 500 ETF T$16.97B9.95%22.7MAdded
3QQQINVESCO QQQ TR$10.14B5.94%13.8MAdded
4QQQINVESCO QQQ TR$8.03B4.71%10.9MAdded
5ILCGISHARES TR$7.76B4.55%39.4MAdded
6MUMICRON TECHNOLOGY INC$3.63B2.13%3.1MAdded
7NVDANVIDIA CORPORATION$3.51B2.06%17.5MTrimmed
8ILCGISHARES TR$3.34B1.96%26.9MTrimmed
9NVDANVIDIA CORPORATION$3.28B1.92%16.4MTrimmed
10TSLATESLA INC$2.94B1.73%7.0MTrimmed
11TSLATESLA INC$2.44B1.43%5.8MTrimmed
12GOOGLALPHABET INC$2.37B1.39%6.7MTrimmed
13AAPLAPPLE INC$2.36B1.39%8.2MTrimmed
14MUMICRON TECHNOLOGY INC$2.20B1.29%1.9MTrimmed
15METAMETA PLATFORMS INC$2.04B1.20%3.6MTrimmed
16AMDADVANCED MICRO DEVICES INC$1.96B1.15%3.4MTrimmed
17SNDK1SANDISK CORP$1.97B1.15%864,500Added
18GOOGLALPHABET INC$1.93B1.13%5.4MAdded
19MSFTMICROSOFT CORP$1.74B1.02%4.7MAdded
20AMDADVANCED MICRO DEVICES INC$1.71B1.01%3.0MAdded
21AAPLAPPLE INC$1.72B1.01%6.0MTrimmed
22ESPOVANECK ETF TRUST$1.62B0.95%4.0MAdded
23GLDSPDR GOLD TR$1.45B0.85%3.9MTrimmed
24AMZNAMAZON COM INC$1.24B0.73%5.2MTrimmed
25METAMETA PLATFORMS INC$1.17B0.69%2.1MTrimmed

Source: SEC Form 13F filings · as of 2026-06-30