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 | |
|---|---|---|---|---|---|---|
6501
GraniteShares ETF Trust GraniteShares 2x Long BABA Daily ETF
BABX
$99.7M
| $38K | ﹤0.01% |
+2,880
| New | +$40.7K |
|
6502
PUT
Beam Global
BEEM
$23.1M
| $38K | ﹤0.01% |
5,600
-4,700
| -46% | -$32K |
|
6503
PUT
Capricor Therapeutics
CAPR
$243M
| $38K | ﹤0.01% |
5,700
-5,600
| -50% | -$27.1K |
|
6504
CALL
Century Communities
CCS
$1.95B
| $38K | ﹤0.01% |
400
-3,400
| -89% | -$298K |
|
6505
CareTrust REIT
CTRE
$9.84B
| $38K | ﹤0.01% |
+1,583
| New | +$35.7K |
|
6506
CALL
CVRx
CVRX
$143M
| $38K | ﹤0.01% |
2,100
+600
| +40% | +$14.2K |
|
6507
PUT
Clearway Energy Class C
CWEN
$4.94B
| $38K | ﹤0.01% |
1,700
-5,600
| -77% | -$132K |
|
|
DMC
6508
CALL
Del Monte Corp
DMC
$1.41B
| $38K | ﹤0.01% |
1,500
-900
| -38% | -$22.4K |
|
6509
CALL
Gerdau
GGB
$9.74B
| $38K | ﹤0.01% |
10,560
-240,120
| -96% | -$869K |
|
6510
PUT
Heritage Insurance Holdings
HRTG
$907M
| $38K | ﹤0.01% |
3,600
-16,600
| -82% | -$117K |
|
|
HSAI
6511
Hesai Group
HSAI
$2.6B
| $38K | ﹤0.01% |
+7,610
| New | +$40.9K |
|
6512
PUT
Coca-Cola Femsa
KOF
$22.9B
| $38K | ﹤0.01% |
+400
| New | +$38.3K |
|
6513
Centrus Energy
LEU
$3.48B
| $38K | ﹤0.01% |
+939
| New | +$43.1K |
|
6514
PUT
Liberty Latin America Class C
LILAK
$1.61B
| $38K | ﹤0.01% |
6,050
+5,390
| +817% | +$33.3K |
|
6515
CALL
Mayville Engineering Co
MEC
$660M
| $38K | ﹤0.01% |
2,700
+2,200
| +440% | +$28.7K |
|
6516
CALL
MoneyHero
MNY
$41.9M
| $38K | ﹤0.01% |
20,800
-26,200
| -56% | -$41.6K |
|
6517
PUT
National CineMedia
NCMI
$375M
| $38K | ﹤0.01% |
+7,500
| New | +$31.9K |
|
6518
PUT
NNN REIT
NNN
$9.16B
| $38K | ﹤0.01% |
900
-6,100
| -87% | -$254K |
|
|
OLP
6519
PUT
One Liberty Properties
OLP
$532M
| $38K | ﹤0.01% |
1,700
-600
| -26% | -$12.8K |
|
6520
PUT
Organogenesis Holdings
ORGO
$315M
| $38K | ﹤0.01% |
13,700
+12,900
| +1,613% | +$43.8K |
|
6521
CALL
Pampa Energía
PAM
$4.77B
| $38K | ﹤0.01% |
900
-2,400
| -73% | -$107K |
|
6522
CALL
Puma Biotechnology
PBYI
$402M
| $38K | ﹤0.01% |
7,300
+100
| +1% | +$539 |
|
6523
CALL
Pliant Therapeutics
PLRX
$65.6M
| $38K | ﹤0.01% |
2,600
-19,500
| -88% | -$322K |
|
|
PPTA
6524
Perpetua Resources
PPTA
$2.37B
| $38K | ﹤0.01% |
9,359
+658
| +8% | +$2.17K |
|
6525
CALL
RELX
RELX
$63.9B
| $38K | ﹤0.01% |
900
+500
| +125% | +$21.1K |
|
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.