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 | |
|---|---|---|---|---|---|---|
5401
Huazhu Hotels Group
HTHT
$13.1B
| $98K | ﹤0.01% |
+2,954
| New | +$111K |
|
5402
CALL
Ituran Location and Control
ITRN
$1.09B
| $98K | ﹤0.01% |
4,000
-1,100
| -22% | -$29.2K |
|
5403
CALL
Syndax Pharmaceuticals
SNDX
$1.67B
| $98K | ﹤0.01% |
4,800
-38,000
| -89% | -$795K |
|
5404
PUT
W&T Offshore
WTI
$524M
| $98K | ﹤0.01% |
46,100
+3,600
| +8% | +$8.36K |
|
5405
CALL
Annexon
ANNX
$832M
| $97K | ﹤0.01% |
19,800
-30,300
| -60% | -$157K |
|
5406
CALL
Invesco DB Commodity Index Tracking Fund
DBC
$1.69B
| $97K | ﹤0.01% |
4,200
-7,000
| -63% | -$164K |
|
5407
CALL
iShares Core Dividend ETF
DIVB
$1.68B
| $97K | ﹤0.01% |
2,300
-1,300
| -36% | -$56.8K |
|
5408
CALL
Goosehead Insurance
GSHD
$2.24B
| $97K | ﹤0.01% |
1,700
-14,200
| -89% | -$852K |
|
5409
KraneShares California Carbon Allowance Strategy ETF
KCCA
$113M
| $97K | ﹤0.01% |
+4,361
| New | +$122K |
|
|
LAND
5410
CALL
Gladstone Land Corp
LAND
$355M
| $97K | ﹤0.01% |
7,100
+1,300
| +22% | +$17.1K |
|
5411
CALL
Novanta
NOVT
$5.09B
| $97K | ﹤0.01% |
600
-1,600
| -73% | -$260K |
|
|
SOHU
5412
CALL
Sohu.com
SOHU
$357M
| $97K | ﹤0.01% |
+7,000
| New | +$84.2K |
|
5413
CALL
Vuzix
VUZI
$190M
| $97K | ﹤0.01% |
72,400
+22,200
| +44% | +$30.6K |
|
|
5414
W&T Offshore
WTI
$524M
| $97K | ﹤0.01% |
45,541
+24,198
| +113% | +$56.2K |
|
|
CALT
5415
PUT
DELISTED
Calliditas Therapeutics AB American Depositary Shares
CALT
| $97K | ﹤0.01% |
2,500
+2,300
| +1,150% | +$63.2K |
|
5416
Aldeyra Therapeutics
ALDX
$93.5M
| $96K | ﹤0.01% |
29,302
-64,163
| -69% | -$251K |
|
|
CIM
5417
Chimera Investment
CIM
$1.03B
| $96K | ﹤0.01% |
7,556
-16,081
| -68% | -$204K |
|
5418
PUT
Compass Diversified
CODI
$749M
| $96K | ﹤0.01% |
4,400
+3,700
| +529% | +$83.2K |
|
5419
Future Fuel
FF
$214M
| $96K | ﹤0.01% |
+18,828
| New | +$102K |
|
5420
CALL
Fomento Económico Mexicano
FMX
$43.8B
| $96K | ﹤0.01% |
900
-30,000
| -97% | -$3.51M |
|
5421
PUT
Ichor Holdings
ICHR
$2.7B
| $96K | ﹤0.01% |
2,500
-700
| -22% | -$26.7K |
|
5422
Qualys
QLYS
$4.98B
| $96K | ﹤0.01% |
680
-73
| -10% | -$11.1K |
|
|
SBOW
5423
DELISTED
SilverBow Resources, Inc.
SBOW
| $96K | ﹤0.01% |
+2,543
| New | +$89.3K |
|
5424
PUT
ADMA Biologics
ADMA
$1.95B
| $95K | ﹤0.01% |
8,500
+7,600
| +844% | +$63.8K |
|
5425
Apple Hospitality REIT
APLE
$3.9B
| $95K | ﹤0.01% |
+6,560
| New | +$97.8K |
|
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.