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 | |
|---|---|---|---|---|---|---|
5076
CALL
Idaho Strategic Resources
IDR
$462M
| $132K | ﹤0.01% |
13,400
+9,100
| +212% | +$84.8K |
|
5077
Jasper Therapeutics
JSPR
$20.7M
| $132K | ﹤0.01% |
5,821
+2,063
| +55% | +$49.5K |
|
5078
CALL
Kontoor Brands
KTB
$4.63B
| $132K | ﹤0.01% |
2,000
-2,400
| -55% | -$157K |
|
5079
PUT
Tanger
SKT
$4.71B
| $132K | ﹤0.01% |
4,900
-300
| -6% | -$8.25K |
|
5080
CALL
Worthington Enterprises
WOR
$2.74B
| $132K | ﹤0.01% |
2,800
-13,000
| -82% | -$734K |
|
5081
PUT
Clean Energy Fuels
CLNE
$425M
| $131K | ﹤0.01% |
49,200
-26,600
| -35% | -$68.6K |
|
5082
PUT
Kirby Corp
KEX
$7.08B
| $131K | ﹤0.01% |
1,100
+300
| +38% | +$33.5K |
|
5083
Park Hotels & Resorts
PK
$3.03B
| $131K | ﹤0.01% |
+8,748
| New | +$140K |
|
|
BWIN
5084
CALL
Baldwin Insurance Group
BWIN
$2.6B
| $131K | ﹤0.01% |
3,700
+2,100
| +131% | +$65K |
|
|
AEVA
5085
CALL
Aeva Technologies
AEVA
$1.13B
| $130K | ﹤0.01% |
51,800
-1,100
| -2% | -$3.59K |
|
5086
CALL
Accuray
ARAY
$33.9M
| $130K | ﹤0.01% |
71,600
+6,500
| +10% | +$12.4K |
|
|
FRGE
5087
CALL
DELISTED
Forge Global Holdings
FRGE
| $130K | ﹤0.01% |
5,940
-573
| -9% | -$15.2K |
|
5088
Huron Consulting
HURN
$2.61B
| $130K | ﹤0.01% |
1,322
+75
| +6% | +$6.9K |
|
5089
PUT
Inspired Entertainment
INSE
$182M
| $130K | ﹤0.01% |
14,300
-100
| -0.7% | -$912 |
|
5090
PUT
International Seaways
INSW
$4.71B
| $130K | ﹤0.01% |
2,200
-800
| -27% | -$46.6K |
|
5091
PUT
MDU Resources
MDU
$4.17B
| $130K | ﹤0.01% |
9,386
| – | – |
|
5092
Navitas Semiconductor
NVTS
$2.87B
| $130K | ﹤0.01% |
33,277
-21,853
| -40% | -$91.9K |
|
5093
OneSpaWorld
OSW
$2.64B
| $130K | ﹤0.01% |
8,474
+2,117
| +33% | +$30.2K |
|
5094
CALL
Patrick Industries
PATK
$2.79B
| $130K | ﹤0.01% |
1,800
-3,450
| -66% | -$253K |
|
5095
PUT
Polestar Automotive Holding UK
PSNY
$2.05B
| $130K | ﹤0.01% |
5,513
+4,173
| +311% | +$139K |
|
5096
CALL
GeneDx Holdings
WGS
$2.05B
| $130K | ﹤0.01% |
5,000
+3,900
| +355% | +$73.9K |
|
5097
ProShares Ultra Bitcoin ETF
BITU
$359M
| $130K | ﹤0.01% |
+4,896
| New | +$164K |
|
5098
CALL
CACI
CACI
$10.5B
| $129K | ﹤0.01% |
300
-8,900
| -97% | -$3.63M |
|
|
CMPS
5099
Compass Pathways
CMPS
$1.56B
| $129K | ﹤0.01% |
21,492
+17,158
| +396% | +$135K |
|
5100
Capri Holdings
CPRI
$1.82B
| $129K | ﹤0.01% |
+3,924
| New | +$142K |
|
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.