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 | |
|---|---|---|---|---|---|---|
|
XRN
7351
Chiron Real Estate Inc
XRN
$540M
| $11K | ﹤0.01% |
255
-682
| -73% | -$29.6K |
|
7352
PUT
GrowGeneration
GRWG
$88.9M
| $11K | ﹤0.01% |
5,500
-23,400
| -81% | -$59.3K |
|
7353
PUT
Goosehead Insurance
GSHD
$1.47B
| $11K | ﹤0.01% |
200
-700
| -78% | -$42K |
|
7354
CALL
Goldman Sachs ActiveBeta International Equity ETF
GSIE
$5.9B
| $11K | ﹤0.01% |
100
| – | – |
|
7355
PUT
Hagerty
HGTY
$1.2B
| $11K | ﹤0.01% |
+1,100
| New | +$10.2K |
|
7356
Innovative Solutions & Support
ISSC
$345M
| $11K | ﹤0.01% |
+1,925
| New | +$12.2K |
|
7357
Quadratic Interest Rate Volatility and Inflation Hedge ETF
IVOL
$270M
| $11K | ﹤0.01% |
+644
| New | +$11.9K |
|
|
TBHC
7358
DELISTED
The Brand House Collective
TBHC
| $11K | ﹤0.01% |
7,098
+5,226
| +279% | +$10.5K |
|
7359
Kopin
KOPN
$687M
| $11K | ﹤0.01% |
14,195
-19,617
| -58% | -$19.1K |
|
7360
CALL
LiveWire
LVWR
$498M
| $11K | ﹤0.01% |
1,500
-6,200
| -81% | -$43.3K |
|
7361
PUT
Moelis & Co
MC
$5.04B
| $11K | ﹤0.01% |
200
+100
| +100% | +$5.4K |
|
7362
Maximus
MMS
$3.2B
| $11K | ﹤0.01% |
+134
| New | +$11.3K |
|
|
MVO
7363
PUT
MV Oil Trust
MVO
$6.85M
| $11K | ﹤0.01% |
1,200
-3,700
| -76% | -$35.8K |
|
|
NAK
7364
PUT
Northern Dynasty Minerals
NAK
$857M
| $11K | ﹤0.01% |
35,400
+29,100
| +462% | +$8.75K |
|
7365
CALL
Nerdy
NRDY
$109M
| $11K | ﹤0.01% |
6,900
-900
| -12% | -$1.98K |
|
|
NXDT
7366
NexPoint Diversified Real Estate Trust
NXDT
$281M
| $11K | ﹤0.01% |
+2,147
| New | +$12.2K |
|
|
OGI
7367
PUT
Organigram Holdings
OGI
$132M
| $11K | ﹤0.01% |
7,300
-38,000
| -84% | -$69K |
|
7368
CALL
Oportun Financial
OPRT
$262M
| $11K | ﹤0.01% |
4,100
-1,100
| -21% | -$3.33K |
|
7369
PUT
Old Second Bancorp
OSBC
$1.27B
| $11K | ﹤0.01% |
+800
| New | +$11.3K |
|
7370
CALL
Puma Biotechnology
PBYI
$407M
| $11K | ﹤0.01% |
3,400
-3,900
| -53% | -$17.1K |
|
|
7371
Puma Biotechnology
PBYI
$407M
| $11K | ﹤0.01% |
3,498
+2,551
| +269% | +$11.2K |
|
7372
PDF Solutions
PDFS
$2B
| $11K | ﹤0.01% |
308
-3,179
| -91% | -$106K |
|
7373
PUT
Phinia Inc
PHIN
$2.91B
| $11K | ﹤0.01% |
300
-2,600
| -90% | -$107K |
|
7374
Playboy Inc
PLBY
$143M
| $11K | ﹤0.01% |
+15,308
| New | +$14.2K |
|
7375
PUT
Prime Medicine
PRME
$544M
| $11K | ﹤0.01% |
2,300
-1,200
| -34% | -$7.28K |
|
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.