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
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3976
Brookfield Asset Management
BAM
$76.7B
| $372K | ﹤0.01% |
+9,784
| New | +$385K |
|
|
GTHX
3977
CALL
DELISTED
G1 Therapeutics, Inc. Common Stock
GTHX
| $372K | ﹤0.01% |
163,400
+20,300
| +14% | +$77.5K |
|
3978
Black Stone Minerals
BSM
$3.14B
| $371K | ﹤0.01% |
23,706
+22,771
| +2,435% | +$364K |
|
3979
PUT
Henry Schein
HSIC
$9.76B
| $371K | ﹤0.01% |
5,800
-87,600
| -94% | -$6.17M |
|
3980
PUT
ING
ING
$95.1B
| $371K | ﹤0.01% |
21,700
-4,700
| -18% | -$79.8K |
|
3981
Invesco Mortgage Capital
IVR
$769M
| $371K | ﹤0.01% |
39,648
+21,419
| +117% | +$193K |
|
3982
CALL
Jackson Financial
JXN
$8.57B
| $371K | ﹤0.01% |
5,000
-22,100
| -82% | -$1.58M |
|
3983
PUT
Navigator Holdings
NVGS
$1.34B
| $371K | ﹤0.01% |
21,300
-14,300
| -40% | -$231K |
|
3984
PUT
Manhattan Associates
MANH
$9.95B
| $370K | ﹤0.01% |
1,500
+100
| +7% | +$22.7K |
|
|
VSXY
3985
Victoria's Secret
VSXY
$7.1B
| $370K | ﹤0.01% |
+20,983
| New | +$399K |
|
3986
Arrowhead Research
ARWR
$12.1B
| $369K | ﹤0.01% |
14,220
-6,791
| -32% | -$167K |
|
3987
CALL
Freedom Holding
FRHC
$9.84B
| $369K | ﹤0.01% |
4,900
+1,900
| +63% | +$138K |
|
3988
CALL
Manchester United
MANU
$4.03B
| $369K | ﹤0.01% |
22,900
+1,600
| +8% | +$25.5K |
|
|
PDCO
3989
CALL
DELISTED
Patterson Companies, Inc.
PDCO
| $369K | ﹤0.01% |
15,300
+4,300
| +39% | +$108K |
|
3990
CALL
Emergent Biosolutions
EBS
$377M
| $368K | ﹤0.01% |
54,000
+38,300
| +244% | +$165K |
|
|
OBE
3991
CALL
Obsidian Energy
OBE
$628M
| $368K | ﹤0.01% |
49,200
-100
| -0.2% | -$784 |
|
3992
STAAR Surgical
STAA
$1.13B
| $368K | ﹤0.01% |
+7,747
| New | +$339K |
|
3993
PUT
Advanced Drainage Systems
WMS
$11.1B
| $368K | ﹤0.01% |
2,300
-9,200
| -80% | -$1.54M |
|
|
SPWR
3994
DELISTED
SunPower Corporation Common Stock
SPWR
| $368K | ﹤0.01% |
+124,584
| New | +$340K |
|
3995
PUT
Antero Midstream
AM
$10.3B
| $367K | ﹤0.01% |
24,900
-29,100
| -54% | -$418K |
|
3996
PUT
Factset
FDS
$10.1B
| $367K | ﹤0.01% |
900
+500
| +125% | +$212K |
|
3997
PUT
Invesco DB US Dollar Index Bullish Fund
UUP
$426M
| $367K | ﹤0.01% |
12,600
-49,000
| -80% | -$1.41M |
|
3998
Aehr Test Systems
AEHR
$2.27B
| $366K | ﹤0.01% |
32,819
-6,615
| -17% | -$77.1K |
|
3999
CoreCivic
CXW
$3.03B
| $366K | ﹤0.01% |
28,235
-15,510
| -35% | -$227K |
|
|
NNDM
4000
CALL
Nano Dimension
NNDM
$314M
| $366K | ﹤0.01% |
166,700
+22,000
| +15% | +$55.2K |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.