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 | |
|---|---|---|---|---|---|---|
2251
PUT
Viatris
VTRS
$20.1B
| $1.9M | ﹤0.01% |
178,400
-5,500
| -3% | -$60.8K |
|
2252
CALL
Host Hotels & Resorts
HST
$16.8B
| $1.89M | ﹤0.01% |
105,300
+88,200
| +516% | +$1.65M |
|
2253
PUT
Vivid Seats
SEAT
$77M
| $1.89M | ﹤0.01% |
16,455
+1,755
| +12% | +$191K |
|
2254
State Street Consumer Staples Select Sector SPDR ETF
XLP
$14.2B
| $1.89M | ﹤0.01% |
+24,709
| New | +$1.88M |
|
2255
PUT
Itaú Unibanco
ITUB
$91.3B
| $1.89M | ﹤0.01% |
366,979
-555,170
| -60% | -$3.04M |
|
|
SA
2256
CALL
Seabridge Gold
SA
$2.8B
| $1.89M | ﹤0.01% |
138,200
-48,800
| -26% | -$739K |
|
2257
PUT
Innovative Industrial Properties
IIPR
$1.78B
| $1.89M | ﹤0.01% |
17,300
-25,000
| -59% | -$2.62M |
|
2258
PUT
Taboola.com
TBLA
$1.32B
| $1.89M | ﹤0.01% |
549,400
+56,100
| +11% | +$226K |
|
2259
PUT
WD-40
WDFC
$3.1B
| $1.89M | ﹤0.01% |
8,600
-8,700
| -50% | -$2.01M |
|
2260
T-Mobile US
TMUS
$193B
| $1.89M | ﹤0.01% |
10,712
-30,359
| -74% | -$5.09M |
|
2261
PUT
Church & Dwight Co
CHD
$23.1B
| $1.89M | ﹤0.01% |
18,200
-11,400
| -39% | -$1.21M |
|
2262
PUT
Jacobs Solutions
J
$15.9B
| $1.89M | ﹤0.01% |
16,321
-363
| -2% | -$42.6K |
|
2263
Generac Holdings
GNRC
$11.9B
| $1.88M | ﹤0.01% |
14,251
+11,915
| +510% | +$1.65M |
|
2264
GoDaddy
GDDY
$12.3B
| $1.88M | ﹤0.01% |
+13,469
| New | +$1.78M |
|
|
EMBJ
2265
CALL
Embraer S.A. ADS
EMBJ
$11.6B
| $1.88M | ﹤0.01% |
72,800
-56,700
| -44% | -$1.53M |
|
2266
Lightspeed Commerce
LSPD
$1.3B
| $1.88M | ﹤0.01% |
137,220
-40,040
| -23% | -$560K |
|
2267
Valaris
VAL
$5.51B
| $1.88M | ﹤0.01% |
25,214
+22,587
| +860% | +$1.64M |
|
2268
PUT
Cracker Barrel
CBRL
$1.2B
| $1.88M | ﹤0.01% |
44,500
+2,800
| +7% | +$150K |
|
2269
Nasdaq
NDAQ
$51.5B
| $1.88M | ﹤0.01% |
+31,126
| New | +$1.89M |
|
2270
CALL
UGI
UGI
$8B
| $1.88M | ﹤0.01% |
81,900
+11,200
| +16% | +$271K |
|
2271
CALL
Sprout Social
SPT
$455M
| $1.87M | ﹤0.01% |
52,500
+3,700
| +8% | +$149K |
|
|
SII
2272
Sprott
SII
$2.65B
| $1.87M | ﹤0.01% |
45,217
+22,798
| +102% | +$956K |
|
2273
PUT
Comstock Resources
CRK
$3.97B
| $1.87M | ﹤0.01% |
180,200
-49,600
| -22% | -$520K |
|
2274
CALL
Casey's General Stores
CASY
$31.9B
| $1.87M | ﹤0.01% |
4,900
-2,700
| -36% | -$901K |
|
|
WRK
2275
DELISTED
WestRock Company
WRK
| $1.87M | ﹤0.01% |
+37,175
| New | +$1.88M |
|
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.