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 | |
|---|---|---|---|---|---|---|
2351
NETGEAR
NTGR
$669M
| $1.71M | ﹤0.01% |
112,067
+45,720
| +69% | +$639K |
|
2352
PUT
Warby Parker
WRBY
$3.01B
| $1.71M | ﹤0.01% |
106,700
-24,200
| -18% | -$358K |
|
2353
CALL
Restaurant Brands International
QSR
$25.1B
| $1.71M | ﹤0.01% |
24,300
-91,800
| -79% | -$6.56M |
|
2354
CALL
Vaalco Energy
EGY
$594M
| $1.71M | ﹤0.01% |
272,200
+25,100
| +10% | +$162K |
|
2355
PUT
EyePoint Inc
EYPT
$1.02B
| $1.71M | ﹤0.01% |
196,100
+129,800
| +196% | +$1.81M |
|
|
ZVOL
2356
PUT
Volatility Premium Plus ETF
ZVOL
$12.9M
| $1.7M | ﹤0.01% |
+53,800
| New | +$1.26M |
|
2357
CALL
Grindr
GRND
$2.64B
| $1.7M | ﹤0.01% |
139,100
+28,900
| +26% | +$288K |
|
2358
Direxion Daily FTSE China Bull 3X ETF
YINN
$660M
| $1.7M | ﹤0.01% |
76,007
-169,616
| -69% | -$4.09M |
|
2359
CALL
Birkenstock
BIRK
$7.47B
| $1.7M | ﹤0.01% |
31,200
-16,200
| -34% | -$803K |
|
2360
CALL
CVR Energy
CVI
$3.36B
| $1.7M | ﹤0.01% |
63,400
+2,800
| +5% | +$85.1K |
|
2361
CALL
Cardlytics
CDLX
$21M
| $1.69M | ﹤0.01% |
20,640
+5,080
| +33% | +$549K |
|
2362
Maplebear
CART
$9.92B
| $1.69M | ﹤0.01% |
52,651
-288,546
| -85% | -$9.93M |
|
2363
PUT
Acuity Brands
AYI
$9.88B
| $1.69M | ﹤0.01% |
7,000
+3,200
| +84% | +$818K |
|
2364
Fair Isaac
FICO
$28.7B
| $1.69M | ﹤0.01% |
+1,134
| New | +$1.47M |
|
2365
CALL
Global Ship Lease
GSL
$1.57B
| $1.69M | ﹤0.01% |
58,600
-18,500
| -24% | -$469K |
|
2366
CALL
Par Pacific Holdings
PARR
$3.88B
| $1.68M | ﹤0.01% |
66,700
-1,400
| -2% | -$41.3K |
|
2367
CALL
Century Aluminum
CENX
$4.57B
| $1.68M | ﹤0.01% |
100,500
+45,100
| +81% | +$768K |
|
2368
CALL
Hudbay
HBM
$9.92B
| $1.68M | ﹤0.01% |
185,900
+182,200
| +4,924% | +$1.58M |
|
2369
Annaly Capital Management
NLY
$16.9B
| $1.68M | ﹤0.01% |
88,290
-29,570
| -25% | -$574K |
|
2370
CALL
Herbalife
HLF
$1.23B
| $1.68M | ﹤0.01% |
161,800
-24,300
| -13% | -$243K |
|
2371
CALL
Universal Technical Institute
UTI
$2.08B
| $1.68M | ﹤0.01% |
106,700
-8,000
| -7% | -$120K |
|
|
GOOS
2372
CALL
Canada Goose Holdings
GOOS
$868M
| $1.68M | ﹤0.01% |
129,700
-162,400
| -56% | -$2.02M |
|
2373
Vestis
VSTS
$2.06B
| $1.68M | ﹤0.01% |
136,964
+129,485
| +1,731% | +$1.87M |
|
2374
Pool Corp
POOL
$6.7B
| $1.67M | ﹤0.01% |
+5,448
| New | +$1.97M |
|
2375
CALL
Factset
FDS
$9.05B
| $1.67M | ﹤0.01% |
4,100
-9,100
| -69% | -$3.87M |
|
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.