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 | |
|---|---|---|---|---|---|---|
5926
CALL
First Trust North American Energy Infrastructure Fund
EMLP
$4.11B
| $58K | ﹤0.01% |
+2,000
| New | +$60.1K |
|
5927
PUT
FuelCell Energy
FCEL
$1.81B
| $58K | ﹤0.01% |
3,050
+587
| +24% | +$15.7K |
|
|
KYNB
5928
CALL
Kyntra Bio
KYNB
$27.6M
| $58K | ﹤0.01% |
2,620
-784
| -23% | -$24.2K |
|
5929
PUT
Gaming and Leisure Properties
GLPI
$12.6B
| $58K | ﹤0.01% |
1,300
-6,000
| -82% | -$265K |
|
5930
Infosys
INFY
$49B
| $58K | ﹤0.01% |
+3,158
| New | +$55K |
|
|
LAND
5931
PUT
Gladstone Land Corp
LAND
$350M
| $58K | ﹤0.01% |
4,300
-9,400
| -69% | -$124K |
|
|
MESO
5932
Mesoblast
MESO
$1.84B
| $58K | ﹤0.01% |
+8,652
| New | +$59.2K |
|
5933
VanEck Morningstar Wide Moat ETF
MOAT
$11.9B
| $58K | ﹤0.01% |
676
+385
| +132% | +$33.5K |
|
5934
CALL
Energy Vault
NRGV
$526M
| $58K | ﹤0.01% |
61,200
+56,000
| +1,077% | +$69.6K |
|
5935
PUT
Par Pacific Holdings
PARR
$4.31B
| $58K | ﹤0.01% |
2,300
+1,200
| +109% | +$35.4K |
|
5936
Champion Homes
SKY
$4.38B
| $58K | ﹤0.01% |
858
+794
| +1,241% | +$59.5K |
|
5937
Zegna
ZGN
$3.95B
| $58K | ﹤0.01% |
+4,916
| New | +$60.5K |
|
|
WIRE
5938
CALL
DELISTED
Encore Wire Corp
WIRE
| $58K | ﹤0.01% |
11,500
-10,000
| -47% | -$2.82M |
|
5939
Aterian
ATER
$4.54M
| $57K | ﹤0.01% |
20,531
+19,167
| +1,405% | +$47.7K |
|
5940
PUT
BellRing Brands
BRBR
$1.45B
| $57K | ﹤0.01% |
1,000
-60,300
| -98% | -$3.45M |
|
|
CSGS
5941
DELISTED
CSG Systems International
CSGS
| $57K | ﹤0.01% |
1,405
+615
| +78% | +$27.3K |
|
|
DQ
5942
Daqo New Energy
DQ
$823M
| $57K | ﹤0.01% |
+3,914
| New | +$82.4K |
|
5943
DXP Enterprises
DXPE
$2.44B
| $57K | ﹤0.01% |
1,256
-7,796
| -86% | -$394K |
|
5944
PUT
Greystone Housing Impact Investors LP
GHI
$136M
| $57K | ﹤0.01% |
+3,900
| New | +$59.4K |
|
5945
PUT
Genie Energy
GNE
$370M
| $57K | ﹤0.01% |
3,900
+3,800
| +3,800% | +$57.8K |
|
5946
PUT
Ingredion
INGR
$6.29B
| $57K | ﹤0.01% |
500
-700
| -58% | -$80.8K |
|
5947
CALL
Kornit Digital
KRNT
$703M
| $57K | ﹤0.01% |
3,900
-10,600
| -73% | -$164K |
|
5948
CALL
Kura Oncology
KURA
$795M
| $57K | ﹤0.01% |
2,800
-4,700
| -63% | -$96.6K |
|
|
PBT
5949
Permian Basin Royalty Trust
PBT
$1.37B
| $57K | ﹤0.01% |
5,077
-8,157
| -62% | -$99K |
|
5950
Seanergy Maritime Holdings
SHIP
$381M
| $57K | ﹤0.01% |
5,844
-2,508
| -30% | -$26.1K |
|
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.