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 | |
|---|---|---|---|---|---|---|
|
PRMW
6126
DELISTED
Primo Water Corporation
PRMW
| $49K | ﹤0.01% |
2,267
-361
| -14% | -$7.42K |
|
|
PWSC
6127
DELISTED
PowerSchool Holdings, Inc.
PWSC
| $49K | ﹤0.01% |
+2,207
| New | +$44.5K |
|
|
ROI
6128
PUT
DELISTED
WISDOMTREE LARGECAP GROWTH FUND
ROI
| $49K | ﹤0.01% |
1,100
+1,000
| +1,000% | +$44.5K |
|
|
LUNA
6129
PUT
DELISTED
Luna Innovations Incorporated
LUNA
| $49K | ﹤0.01% |
15,400
+14,900
| +2,980% | +$44.2K |
|
6130
CALL
Clearwater Paper
CLW
$341M
| $48K | ﹤0.01% |
1,000
-2,300
| -70% | -$108K |
|
|
CPRX
6131
CALL
DELISTED
Catalyst Pharmaceutical
CPRX
| $48K | ﹤0.01% |
3,100
-16,500
| -84% | -$257K |
|
6132
CALL
Carriage Services
CSV
$637M
| $48K | ﹤0.01% |
1,800
-26,400
| -94% | -$693K |
|
6133
PUT
CVB Financial
CVBF
$4B
| $48K | ﹤0.01% |
2,800
-1,100
| -28% | -$18.3K |
|
6134
PUT
Cedar Fair
FUN
$1.81B
| $48K | ﹤0.01% |
+900
| New | +$38.7K |
|
6135
CALL
Genie Energy
GNE
$373M
| $48K | ﹤0.01% |
3,300
-19,200
| -85% | -$292K |
|
|
HSAI
6136
CALL
Hesai Group
HSAI
$2.6B
| $48K | ﹤0.01% |
11,600
+100
| +0.9% | +$476 |
|
6137
PUT
MidCap Financial Investment
MFIC
$796M
| $48K | ﹤0.01% |
3,200
-35,300
| -92% | -$541K |
|
6138
Myriad Genetics
MYGN
$507M
| $48K | ﹤0.01% |
+1,985
| New | +$43.6K |
|
6139
PUT
National CineMedia
NCMI
$375M
| $48K | ﹤0.01% |
11,000
+3,500
| +47% | +$16.9K |
|
6140
PUT
SurgePays
SURG
$5.43M
| $48K | ﹤0.01% |
15,300
-76,900
| -83% | -$291K |
|
6141
PUT
Standex International
SXI
$3.48B
| $48K | ﹤0.01% |
+300
| New | +$50.8K |
|
6142
Viemed Healthcare
VMD
$451M
| $48K | ﹤0.01% |
7,465
+5,759
| +338% | +$43.4K |
|
|
GATO
6143
DELISTED
Gatos Silver, Inc.
GATO
| $48K | ﹤0.01% |
+4,657
| New | +$49.2K |
|
6144
PUT
American Vanguard Corp
AVD
$70.4M
| $47K | ﹤0.01% |
5,500
+2,600
| +90% | +$26.6K |
|
6145
CALL
Compañía de Minas Buenaventura
BVN
$8.09B
| $47K | ﹤0.01% |
2,800
-15,700
| -85% | -$265K |
|
6146
CALL
Erasca
ERAS
$6.48B
| $47K | ﹤0.01% |
+20,000
| New | +$43.2K |
|
6147
PUT
First Financial Bankshares
FFIN
$5B
| $47K | ﹤0.01% |
+1,600
| New | +$47.9K |
|
6148
CALL
Globus Maritime Ltd
GLBS
$63.9M
| $47K | ﹤0.01% |
25,200
-7,800
| -24% | -$16K |
|
|
IMMP
6149
Immutep
IMMP
$56M
| $47K | ﹤0.01% |
23,490
-8,581
| -27% | -$23K |
|
6150
PUT
Intapp
INTA
$2.47B
| $47K | ﹤0.01% |
1,300
-4,600
| -78% | -$156K |
|
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.