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 | |
|---|---|---|---|---|---|---|
2026
PUT
Mohawk Industries
MHK
$6.9B
| $2.43M | ﹤0.01% |
21,400
+6,400
| +43% | +$744K |
|
2027
CALL
Hecla Mining
HL
$10.2B
| $2.43M | ﹤0.01% |
500,700
+124,300
| +33% | +$663K |
|
2028
CALL
Verisk Analytics
VRSK
$26.4B
| $2.42M | ﹤0.01% |
9,000
-18,700
| -68% | -$4.58M |
|
|
GTLS
2029
PUT
DELISTED
Chart Industries
GTLS
| $2.42M | ﹤0.01% |
16,800
-21,500
| -56% | -$3.24M |
|
2030
PUT
Camping World
CWH
$363M
| $2.42M | ﹤0.01% |
135,300
+82,300
| +155% | +$1.73M |
|
2031
Fox Class A
FOXA
$23.2B
| $2.42M | ﹤0.01% |
70,312
+63,657
| +957% | +$2.08M |
|
2032
CALL
Blackstone Secured Lending
BXSL
$5.41B
| $2.42M | ﹤0.01% |
78,900
+34,000
| +76% | +$1.06M |
|
|
SNV
2033
CALL
DELISTED
Synovus
SNV
| $2.42M | ﹤0.01% |
60,100
+33,900
| +129% | +$1.28M |
|
2034
Galicia Financial Group
GGAL
$7.92B
| $2.41M | ﹤0.01% |
+78,785
| New | +$2.53M |
|
2035
PUT
Bio-Rad Laboratories Class A
BIO
$8.42B
| $2.4M | ﹤0.01% |
8,800
+4,700
| +115% | +$1.37M |
|
2036
PUT
Vornado Realty Trust
VNO
$7.47B
| $2.39M | ﹤0.01% |
91,000
+7,300
| +9% | +$187K |
|
2037
Reddit
RDDT
$32.5B
| $2.39M | ﹤0.01% |
37,356
-12,677
| -25% | -$668K |
|
2038
MPLX
MPLX
$59.5B
| $2.38M | ﹤0.01% |
+56,013
| New | +$2.31M |
|
2039
PUT
Liberty Global Class C
LBTYK
$3.27B
| $2.38M | ﹤0.01% |
136,500
-25,900
| -16% | -$451K |
|
2040
CALL
Dole
DOLE
$1.35B
| $2.38M | ﹤0.01% |
194,400
+20,600
| +12% | +$250K |
|
2041
StoneCo
STNE
$2.62B
| $2.38M | ﹤0.01% |
198,243
+15,577
| +9% | +$230K |
|
2042
PUT
Canadian National Railway
CNI
$78.3B
| $2.37M | ﹤0.01% |
20,100
+3,100
| +18% | +$388K |
|
2043
PUT
Iovance Biotherapeutics
IOVA
$2.23B
| $2.37M | ﹤0.01% |
296,000
+71,500
| +32% | +$766K |
|
2044
Bank of Montreal
BMO
$125B
| $2.37M | ﹤0.01% |
28,285
+22,163
| +362% | +$2.01M |
|
2045
St. Joe Company
JOE
$3.57B
| $2.37M | ﹤0.01% |
43,355
-4,789
| -10% | -$270K |
|
|
SKX
2046
CALL
DELISTED
Skechers
SKX
| $2.37M | ﹤0.01% |
34,300
-700
| -2% | -$46.3K |
|
2047
PUT
Asbury Automotive
ABG
$4.19B
| $2.37M | ﹤0.01% |
10,400
-11,200
| -52% | -$2.54M |
|
2048
CALL
Sigma Lithium
SGML
$1.08B
| $2.37M | ﹤0.01% |
196,800
-91,800
| -32% | -$1.36M |
|
2049
CALL
Under Armour Class C
UA
$2.92B
| $2.37M | ﹤0.01% |
360,200
+9,600
| +3% | +$63.5K |
|
2050
iShares Russell 2000 Value ETF
IWN
$14.4B
| $2.37M | ﹤0.01% |
15,530
+4,850
| +45% | +$742K |
|
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.