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 | |
|---|---|---|---|---|---|---|
|
HTGCR
1976
CALL
DELISTED
HERCULES TECHNOLOGY GROWTH CAP INC TRANS RGTS TO PUR COM STK
HTGCR
| $2.57M | ﹤0.01% |
125,600
-14,100
| -10% | -$288K |
|
1977
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
$351M
| $2.57M | ﹤0.01% |
68,911
-18,636
| -21% | -$735K |
|
1978
PUT
Hertz
HTZ
$572M
| $2.56M | ﹤0.01% |
726,100
+444,100
| +157% | +$2.26M |
|
1979
CALL
Xponential Fitness
XPOF
$265M
| $2.56M | ﹤0.01% |
164,300
+10,300
| +7% | +$127K |
|
1980
PUT
Brinker International
EAT
$8.02B
| $2.56M | ﹤0.01% |
35,400
-3,100
| -8% | -$185K |
|
1981
CALL
Helmerich & Payne
HP
$3.53B
| $2.56M | ﹤0.01% |
70,900
-13,500
| -16% | -$519K |
|
1982
PUT
Deutsche Bank
DB
$66.3B
| $2.56M | ﹤0.01% |
160,600
-415,800
| -72% | -$6.8M |
|
1983
CALL
Chemours
CC
$2.59B
| $2.55M | ﹤0.01% |
113,100
-356,300
| -76% | -$9.33M |
|
1984
CALL
Dorian LPG
LPG
$1.94B
| $2.55M | ﹤0.01% |
60,800
+38,000
| +167% | +$1.63M |
|
1985
Sunrun
RUN
$2.37B
| $2.55M | ﹤0.01% |
215,074
-91,040
| -30% | -$1.12M |
|
1986
PUT
Lithia Motors
LAD
$7.78B
| $2.55M | ﹤0.01% |
10,100
-30,200
| -75% | -$7.91M |
|
|
ABK
1987
CALL
DELISTED
Ambac Financial Group
ABK
| $2.55M | ﹤0.01% |
198,800
-141,800
| -42% | -$1.82M |
|
1988
PUT
CoStar Group
CSGP
$11.3B
| $2.54M | ﹤0.01% |
34,300
-8,600
| -20% | -$729K |
|
1989
CALL
Silicon Motion
SIMO
$9.19B
| $2.54M | ﹤0.01% |
31,400
-15,900
| -34% | -$1.24M |
|
1990
Caesars Entertainment
CZR
$6.1B
| $2.54M | ﹤0.01% |
63,974
-47,375
| -43% | -$1.78M |
|
1991
Union Pacific
UNP
$183B
| $2.54M | ﹤0.01% |
+11,229
| New | +$2.63M |
|
1992
PUT
SM Energy
SM
$7.96B
| $2.54M | ﹤0.01% |
58,700
+11,100
| +23% | +$545K |
|
1993
CALL
Nano X Imaging
NNOX
$62.4M
| $2.54M | ﹤0.01% |
345,400
+47,100
| +16% | +$419K |
|
1994
PUT
Paylocity
PCTY
$6.71B
| $2.52M | ﹤0.01% |
19,100
+11,000
| +136% | +$1.7M |
|
|
CHGX
1995
CALL
DELISTED
AXS Change Finance ESG ETF
CHGX
| $2.52M | ﹤0.01% |
72,000
-68,900
| -49% | -$2.45M |
|
|
NOVA
1996
CALL
DELISTED
Sunnova Energy
NOVA
| $2.51M | ﹤0.01% |
449,900
-494,400
| -52% | -$2.35M |
|
1997
PUT
Brookfield Asset Management
BAM
$74B
| $2.51M | ﹤0.01% |
65,900
-57,600
| -47% | -$2.26M |
|
|
NOVA
1998
PUT
DELISTED
Sunnova Energy
NOVA
| $2.51M | ﹤0.01% |
449,200
-39,600
| -8% | -$188K |
|
1999
CALL
Helen of Troy
HELE
$663M
| $2.5M | ﹤0.01% |
27,000
+1,000
| +4% | +$101K |
|
2000
PUT
Doximity
DOCS
$3.67B
| $2.5M | ﹤0.01% |
89,300
+35,600
| +66% | +$939K |
|
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.