SEC holdings report of an institutional investment manager
What does SIMPLEX TRADING, LLC report holding?
SIMPLEX TRADING, LLC reported holdings of $170.57 billion on Form 13F for the quarter ended 30 June 2026, ranked 71st of 8,857 managers by reported value. The report was filed on .
Reported value
SIMPLEX TRADING, LLC reported holdings of $170.57 billion on Form 13F for the quarter ended 30 June 2026, ranked 71st of 8,857 managers by reported value.
In the quarter before, the quarter ended 31 March 2026, it reported $149.08 billion, so the value is up from then (+14.4%).
Its table has 10,492 entries, which make 9,154 positions when the lines of a security are summed.
The filing
Filed on for the quarter ended 30 June 2026; the manager is in CHICAGO, IL.
The SEC's accession number of the filing is 0001488542-26-000011. The filing is the manager's own. This page shows the value it states for its table and the lines of the table, summed.
As filed
Facts as filed with the SEC, and our arithmetic on them. Not investment advice.
Understanding the report of SIMPLEX TRADING, LLC
Where it stands today
SIMPLEX TRADING, LLC reported $170.6 billion for the quarter ended 30 June 2026, ranked 71st of 8,857 managers.
Where do these numbers come from?
An institutional investment manager that holds 100 million dollars or more of the securities Form 13F covers files a report with the SEC every quarter. This page shows the report of SIMPLEX TRADING, LLC for the quarter ended 30 June 2026.
Read more
The rank counts every manager that filed a holdings report for the quarter, by the total value its table states, the largest first.
The numbers behind the chart
What are the largest holdings of SIMPLEX TRADING, LLC?25 positions
| Issuer, as filed | Class | Value | Share of its value | Shares | Change from 31 March 2026 |
|---|---|---|---|---|---|
| STATE STR SPDR [index name] ETF T | PUT, put | $24.9B | 15% | 33.4M | −20.7% |
| STATE STR SPDR [index name] ETF T | CALL, call | $17.0B | 9.9% | 22.7M | +5.0% |
| INVESCO QQQ TR | PUT, put | $10.1B | 5.9% | 13.8M | +22.3% |
| INVESCO QQQ TR | CALL, call | $8.03B | 4.7% | 10.9M | +5.1% |
| ISHARES TR | PUT, put | $7.76B | 4.5% | 39.4M | +15.0% |
| MICRON TECHNOLOGY INC | PUT, put | $3.63B | 2.1% | 3.14M | +48.4% |
| NVIDIA CORPORATION | CALL, call | $3.51B | 2.1% | 17.5M | −8.2% |
| ISHARES TR | CALL, call | $3.34B | 2.0% | 26.9M | −19.5% |
| NVIDIA CORPORATION | PUT, put | $3.28B | 1.9% | 16.4M | −14.7% |
| TESLA INC | CALL, call | $2.94B | 1.7% | 7.00M | −23.9% |
| TESLA INC | PUT, put | $2.44B | 1.4% | 5.80M | −30.2% |
| ALPHABET INC | CALL, call | $2.37B | 1.4% | 6.66M | −7.5% |
| APPLE INC | CALL, call | $2.36B | 1.4% | 8.17M | −6.7% |
| MICRON TECHNOLOGY INC | CALL, call | $2.20B | 1.3% | 1.91M | −6.0% |
| META PLATFORMS INC | CALL, call | $2.04B | 1.2% | 3.62M | −11.9% |
| SANDISK CORP | PUT, put | $1.97B | 1.2% | 865K | +202.1% |
| ADVANCED MICRO DEVICES INC | PUT, put | $1.96B | 1.1% | 3.37M | −3.0% |
| ALPHABET INC | PUT, put | $1.93B | 1.1% | 5.43M | +7.4% |
| MICROSOFT CORP | CALL, call | $1.74B | 1.0% | 4.66M | +11.4% |
| APPLE INC | PUT, put | $1.72B | 1.0% | 5.95M | −1.1% |
| ADVANCED MICRO DEVICES INC | CALL, call | $1.71B | 1.0% | 2.95M | +0.1% |
| VANECK ETF TRUST | PUT, put | $1.62B | 0.95% | 3.97M | +21.1% |
| SPDR GOLD TR | CALL, call | $1.45B | 0.85% | 3.94M | −28.3% |
| AMAZON COM INC | CALL, call | $1.24B | 0.73% | 5.22M | −25.4% |
| META PLATFORMS INC | PUT, put | $1.17B | 0.69% | 2.08M | −16.7% |
The table scrolls sideways; the first column stays in place.
Which positions are new in the quarter ended 30 June 2026?10 positions, the largest first
| Issuer, as filed | Class | Value |
|---|---|---|
| SPACE EXPLORATION TECHN CORP | CALL, call | $401M |
| SPACE EXPLORATION TECHN CORP | PUT, put | $323M |
| MICRON TECHNOLOGY INC | COM | $60.8M |
| CARNIVAL CORP LTD | PUT, put | $59.9M |
| ROUNDHILL ETF TRUST | COM | $46.2M |
| CEREBRAS SYSTEMS INC | CALL, call | $43.2M |
| CARNIVAL CORP LTD | CALL, call | $37.6M |
| DIREXION SHARES ETF TRUST | COM | $36.8M |
| COINBASE GLOBAL INC | COM | $18.9M |
| QUALCOMM INC | COM | $17.4M |
Which positions were sold out since the quarter ended 31 March 2026?10 positions, the largest first
| Issuer, as filed | Class | Value then |
|---|---|---|
| CARNIVAL CORP | PUT, put | $43.3M |
| CARNIVAL CORP | CALL, call | $36.3M |
| VANECK ETF TRUST | COM | $35.9M |
| INTEL CORP | COM | $33.4M |
| SLB LIMITED | COM | $28.1M |
| HONEYWELL INTL INC | CALL, call | $23.0M |
| ISHARES TR | COM | $22.7M |
| HONEYWELL INTL INC | PUT, put | $19.5M |
| VOLATILITY SHS TR | CALL, call | $19.0M |
| SELECT SECTOR SPDR TR | COM | $18.4M |
What did SIMPLEX TRADING, LLC report in each quarter?8 quarters
| Quarter ended | Filed | Value reported | Entries | Rank |
|---|---|---|---|---|
| $171B | 10,492 | 71 | ||
| $149B | 10,161 | 67 | ||
| $177B | 9,381 | 56 | ||
| $195M | 10,359 | 5,733 | ||
| $175M | 9,904 | 5,835 | ||
| $156M | 9,739 | 5,874 | ||
| $179M | 9,701 | 5,594 | ||
| $170M | 9,647 | 5,466 |
The table scrolls sideways; the first column stays in place.
What do these figures leave out, and where are they from?Limits and source
What this number cannot tell you
- A manager reports the value of its holdings on the last day of a quarter, within 45 days after it. A report that the manager amended is shown with the amendments applied.
- Values are as filed, in dollars. A manager that files a combination report includes the holdings of the managers it names, so the same holding can be in two reports.
- Only holdings that Form 13F covers are reported: US exchange-traded stocks and some funds, options and convertible bonds. Cash, most bonds and holdings abroad are not in a report.
- The table lists a position once for each security, class, and put or call: the lines of the manager's table are summed. A line for a put or call states the value of the shares the option covers, not what the option costs or is worth.
- A share is the value of a position as a part of the value of all the lines of the manager's table.
- Where a name as filed includes the trademarked name of a stock index, the page shows [index name] in its place.
- A position is new when the manager's table for the quarter before has no line for the security, and sold out when its table for this quarter has none. It says nothing about when a position was bought or sold: only the quarter ends are compared.
- A manager can ask the SEC to keep some of its holdings confidential for a time; those holdings are missing from its report until it discloses them.
Observed .
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