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 |
Pfizer
PFE
|
+$89.5M |
| 2 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$85.5M |
| 3 |
Boeing
BA
|
+$71M |
| 4 |
Intel
INTC
|
+$60.7M |
| 5 |
Meta Platforms (Facebook)
META
|
+$48.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$104M |
| 3 |
Alibaba
BABA
|
+$82.8M |
| 4 |
Walt Disney
DIS
|
+$68.5M |
| 5 |
Citigroup
C
|
+$59.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.38% |
| 2 | Healthcare | 0.27% |
| 3 | Consumer Discretionary | 0.25% |
| 4 | Industrials | 0.17% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
5226
Sixth Street Specialty
TSLX
$1.63B
| $141K | ﹤0.01% |
6,598
-8,192
| -55% | -$176K |
|
|
LLAP
5227
DELISTED
Terran Orbital Corporation
LLAP
| $141K | ﹤0.01% |
107,676
+12,678
| +13% | +$12.8K |
|
5228
PUT
United States Brent Oil Fund
BNO
$781M
| $140K | ﹤0.01% |
4,400
-10,800
| -71% | -$318K |
|
|
FAZ
5229
DELISTED
Direxion Daily Financial Bear 3x ETF
FAZ
| $140K | ﹤0.01% |
+1,428
| New | +$173K |
|
5230
CALL
Genesis Energy
GEL
$1.87B
| $140K | ﹤0.01% |
12,600
-1,700
| -12% | -$19.4K |
|
5231
CALL
Gossamer Bio
GOSS
$82.9M
| $140K | ﹤0.01% |
119,400
-150,300
| -56% | -$165K |
|
|
HOUS
5232
CALL
DELISTED
Anywhere Real Estate
HOUS
| $140K | ﹤0.01% |
22,700
+19,800
| +683% | +$131K |
|
5233
PUT
Imperial Petroleum
IMPP
$213M
| $140K | ﹤0.01% |
45,000
-138,800
| -76% | -$431K |
|
5234
PUT
Ingredion
INGR
$6.27B
| $140K | ﹤0.01% |
1,200
+700
| +140% | +$78.8K |
|
5235
James River Group Holdings
JRVR
$208M
| $140K | ﹤0.01% |
15,116
-10,985
| -42% | -$101K |
|
5236
PUT
The RealReal
REAL
$1.46B
| $140K | ﹤0.01% |
35,900
-157,300
| -81% | -$375K |
|
5237
PUT
Upbound Group
UPBD
$1.13B
| $140K | ﹤0.01% |
4,000
+700
| +21% | +$23.4K |
|
5238
PUT
Usana Health Sciences
USNA
$408M
| $140K | ﹤0.01% |
+2,900
| New | +$142K |
|
|
PRFT
5239
PUT
DELISTED
Perficient Inc
PRFT
| $140K | ﹤0.01% |
2,500
+2,100
| +525% | +$137K |
|
5240
CALL
Cognyte Software
CGNT
$659M
| $139K | ﹤0.01% |
16,900
+4,400
| +35% | +$31.2K |
|
5241
Hyliion Holdings
HYLN
$635M
| $139K | ﹤0.01% |
79,119
+29,818
| +60% | +$39.1K |
|
5242
CALL
Ichor Holdings
ICHR
$2.62B
| $139K | ﹤0.01% |
3,600
+800
| +29% | +$31K |
|
5243
PUT
SiTime
SITM
$16B
| $139K | ﹤0.01% |
1,500
+200
| +15% | +$21K |
|
|
MTTR
5244
PUT
DELISTED
Matterport, Inc. Class A Common Stock
MTTR
| $139K | ﹤0.01% |
61,800
-91,900
| -60% | -$201K |
|
5245
CALL
Acacia Research
ACTG
$428M
| $138K | ﹤0.01% |
+26,000
| New | +$108K |
|
5246
PUT
Coeur Mining
CDE
$15.4B
| $138K | ﹤0.01% |
36,700
+9,300
| +34% | +$26.8K |
|
5247
Teucrium Corn Fund
CORN
$176M
| $138K | ﹤0.01% |
6,884
-4,492
| -39% | -$90.4K |
|
5248
Duolingo
DUOL
$6.28B
| $138K | ﹤0.01% |
+630
| New | +$128K |
|
5249
CALL
GrowGeneration
GRWG
$86.5M
| $138K | ﹤0.01% |
48,400
-46,300
| -49% | -$107K |
|
5250
CALL
Jakks Pacific
JAKK
$301M
| $138K | ﹤0.01% |
5,600
+4,800
| +600% | +$145K |
|
Similar funds
Simplex Trading's Q1 2024 Portfolio in Review
As of Q1 2024, Simplex Trading held 10,366 positions worth $173B, up 11% from $156B the previous quarter. Its ten largest holdings account for 47% of the portfolio.
Simplex Trading's Q1 2024 filing shows 1,549 new, 3,675 increased, 3,484 reduced and 1,506 closed positions. Its largest new stake was Boeing: 345,653 shares worth $66.7M. The largest sale was NVIDIA, an estimated $117M.
By sector, the portfolio is most concentrated in Technology at 0.38% of assets, up from 0.33% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2024 buy was Boeing: 345,653 shares worth $66.7M.
- Simplex Trading added most to Pfizer in Q1 2024, an estimated $89.5M increase.
- Simplex Trading's biggest Q1 2024 reduction was NVIDIA, cutting an estimated $117M.
- Simplex Trading fully exited Citigroup in Q1 2024, selling an estimated $59.8M.
- Simplex Trading's ten largest holdings make up 47% of its $173B portfolio in Q1 2024.
- Simplex Trading opened 1,549 new positions and closed 1,506 in Q1 2024.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $173B.
Based on Simplex Trading's 13F filing for Q1 2024, filed 25 Apr 2024.