Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$172M |
| 2 |
Apple
AAPL
|
+$156M |
| 3 |
Broadcom
AVGO
|
+$101M |
| 4 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$57.2M |
| 5 |
UnitedHealth
UNH
|
+$55.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$140M |
| 2 |
Amazon
AMZN
|
+$47.9M |
| 3 |
Netflix
NFLX
|
+$38.3M |
| 4 |
TSMC
TSM
|
+$37.3M |
| 5 |
Pfizer
PFE
|
+$36.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.74% |
| 2 | Communication Services | 0.19% |
| 3 | Consumer Discretionary | 0.18% |
| 4 | Healthcare | 0.17% |
| 5 | Financials | 0.14% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
NBIS
1751
Nebius Group N.V.
NBIS
$47.7B
| $3.04M | ﹤0.01% |
+54,883
| New | +$1.89M |
|
1752
PUT
Becton Dickinson
BDX
$43.1B
| $3.03M | ﹤0.01% |
17,600
+3,100
| +21% | +$568K |
|
1753
CALL
Cracker Barrel
CBRL
$1.2B
| $3.03M | ﹤0.01% |
49,600
+10,600
| +27% | +$534K |
|
1754
CALL
Liquidia Corp
LQDA
$7.67B
| $3.03M | ﹤0.01% |
243,100
+222,800
| +1,098% | +$3.3M |
|
1755
PUT
Martin Marietta Materials
MLM
$33.6B
| $3.02M | ﹤0.01% |
5,500
-100
| -2% | -$52.9K |
|
1756
PUT
Invesco DB US Dollar Index Bullish Fund
UUP
$434M
| $3.02M | ﹤0.01% |
112,400
+71,100
| +172% | +$1.96M |
|
1757
PUT
Hyatt Hotels
H
$17.6B
| $3.02M | ﹤0.01% |
21,600
-3,200
| -13% | -$399K |
|
1758
CALL
Simplify US Equity PLUS Convexity ETF
SPYC
$109M
| $3.01M | ﹤0.01% |
161,700
+130,400
| +417% | +$4.93M |
|
1759
CALL
Lantheus
LNTH
$6.82B
| $3.01M | ﹤0.01% |
36,800
+18,200
| +98% | +$1.6M |
|
|
FINV
1760
CALL
FinVolution Group
FINV
$1.12B
| $3M | ﹤0.01% |
316,800
+305,200
| +2,631% | +$2.61M |
|
1761
PUT
TAL Education Group
TAL
$5.71B
| $3M | ﹤0.01% |
293,500
+251,100
| +592% | +$2.59M |
|
1762
Bristol-Myers Squibb
BMY
$127B
| $2.99M | ﹤0.01% |
64,693
-124,206
| -66% | -$6.1M |
|
1763
CALL
Beazer Homes USA
BZH
$907M
| $2.98M | ﹤0.01% |
133,200
+118,900
| +831% | +$2.47M |
|
1764
CALL
Klaviyo
KVYO
$4.91B
| $2.98M | ﹤0.01% |
88,600
-95,600
| -52% | -$3.03M |
|
1765
Estee Lauder
EL
$29B
| $2.97M | ﹤0.01% |
36,802
+30,988
| +533% | +$1.99M |
|
1766
CALL
Western Alliance Bancorporation
WAL
$9.07B
| $2.97M | ﹤0.01% |
38,100
-2,200
| -5% | -$158K |
|
1767
CALL
Royal Gold
RGLD
$17.1B
| $2.97M | ﹤0.01% |
16,700
-29,900
| -64% | -$5.29M |
|
|
ETOR
1768
PUT
eToro Group
ETOR
$2.93B
| $2.97M | ﹤0.01% |
+44,600
| New | +$2.87M |
|
|
VISN
1769
Vistance Networks Inc
VISN
$2.66B
| $2.96M | ﹤0.01% |
357,132
+262,439
| +277% | +$1.37M |
|
1770
PUT
McCormick & Company Non-Voting
MKC
$13.4B
| $2.96M | ﹤0.01% |
39,000
+14,300
| +58% | +$1.07M |
|
1771
CALL
Wendy's
WEN
$1.33B
| $2.95M | ﹤0.01% |
258,700
+155,700
| +151% | +$1.9M |
|
1772
Gilead Sciences
GILD
$161B
| $2.95M | ﹤0.01% |
+26,577
| New | +$2.83M |
|
1773
CALL
VeriSign
VRSN
$25.3B
| $2.94M | ﹤0.01% |
10,200
-7,400
| -42% | -$2M |
|
|
HNGE
1774
PUT
Hinge Health
HNGE
$5.75B
| $2.94M | ﹤0.01% |
+56,900
| New | +$2.3M |
|
1775
CALL
Hess Midstream
HESM
$5.22B
| $2.94M | ﹤0.01% |
76,400
-156,000
| -67% | -$5.94M |
|
Similar funds
Simplex Trading's Q2 2025 Portfolio in Review
As of Q2 2025, Simplex Trading held 10,048 positions worth $175B, up 12% from $156B the previous quarter. Its ten largest holdings account for 47% of the portfolio.
Simplex Trading withdrew a net $10.5B in Q2 2025, closing 1,431 positions and reducing 3,590 holdings. Its most notable exit was Constellation Energy, an estimated $35.8M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.74% of assets, up from 0.41% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in State Street SPDR S&P 500 ETF Trust worth $61.9M.
- Simplex Trading's largest Q2 2025 buy was State Street SPDR S&P 500 ETF Trust: 100,129 shares worth $61.9M.
- Simplex Trading added most to NVIDIA in Q2 2025, an estimated $172M increase.
- Simplex Trading's biggest Q2 2025 reduction was iShares 20+ Year Treasury Bond ETF, cutting an estimated $140M.
- Simplex Trading fully exited Constellation Energy in Q2 2025, selling an estimated $35.8M.
- Simplex Trading's ten largest holdings make up 47% of its $175B portfolio in Q2 2025.
- Simplex Trading opened 1,525 new positions and closed 1,431 in Q2 2025.
- Simplex Trading's portfolio value rose 12% quarter-over-quarter to $175B.
Based on Simplex Trading's 13F filing for Q2 2025, filed 5 Aug 2025.