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 | |
|---|---|---|---|---|---|---|
6326
CVRx
CVRX
$137M
| $46K | ﹤0.01% |
2,579
-6,856
| -73% | -$162K |
|
6327
Global Water Resources
GWRS
$206M
| $46K | ﹤0.01% |
3,614
+1,081
| +43% | +$13.5K |
|
6328
CALL
Humacyte
HUMA
$176M
| $46K | ﹤0.01% |
14,800
+12,100
| +448% | +$40.7K |
|
6329
CALL
Hancock Whitney
HWC
$6.2B
| $46K | ﹤0.01% |
1,000
| – | – |
|
6330
CALL
ManpowerGroup
MAN
$2.44B
| $46K | ﹤0.01% |
600
-300
| -33% | -$22.3K |
|
6331
M/I Homes
MHO
$3.74B
| $46K | ﹤0.01% |
+341
| New | +$43.3K |
|
|
PEO
6332
CALL
Adams Natural Resources Fund
PEO
$739M
| $46K | ﹤0.01% |
2,079
+104
| +5% | +$2.12K |
|
6333
Invesco Aerospace & Defense ETF
PPA
$8.24B
| $46K | ﹤0.01% |
+457
| New | +$43.4K |
|
6334
CALL
Saratoga Investment
SAR
$312M
| $46K | ﹤0.01% |
2,000
+1,000
| +100% | +$23.5K |
|
6335
Interface
TILE
$1.99B
| $46K | ﹤0.01% |
2,776
-779
| -22% | -$10.8K |
|
6336
CALL
Turning Point Brands
TPB
$1.45B
| $46K | ﹤0.01% |
1,600
+1,500
| +1,500% | +$38.2K |
|
6337
CALL
Tempest Therapeutics
TPST
$13.7M
| $46K | ﹤0.01% |
915
-562
| -38% | -$28.4K |
|
|
TRML
6338
DELISTED
Tourmaline Bio
TRML
| $46K | ﹤0.01% |
+2,018
| New | +$71.2K |
|
6339
PUT
Victory Capital Holdings
VCTR
$6.19B
| $46K | ﹤0.01% |
1,100
| – | – |
|
6340
PUT
Wyndham Hotels & Resorts
WH
$5.56B
| $46K | ﹤0.01% |
600
-41,900
| -99% | -$3.29M |
|
|
YRD
6341
CALL
Yiren Digital
YRD
$97.1M
| $46K | ﹤0.01% |
+10,400
| New | +$49.4K |
|
|
BWIN
6342
CALL
Baldwin Insurance Group
BWIN
$2.7B
| $46K | ﹤0.01% |
1,600
+900
| +129% | +$23.6K |
|
|
AZEK
6343
PUT
DELISTED
The AZEK Co
AZEK
| $45K | ﹤0.01% |
900
-100
| -10% | -$4.36K |
|
|
BRY
6344
CALL
DELISTED
Berry Corp
BRY
| $45K | ﹤0.01% |
5,600
+100
| +2% | +$699 |
|
6345
Compugen
CGEN
$222M
| $45K | ﹤0.01% |
17,697
+6,280
| +55% | +$14.6K |
|
|
CIM
6346
CALL
Chimera Investment
CIM
$1.04B
| $45K | ﹤0.01% |
3,267
-24,600
| -88% | -$343K |
|
|
DAWN
6347
DELISTED
Day One Biopharmaceuticals
DAWN
| $45K | ﹤0.01% |
+2,758
| New | +$41.3K |
|
|
EVRI
6348
PUT
DELISTED
Everi Holdings
EVRI
| $45K | ﹤0.01% |
4,500
+3,800
| +543% | +$39.3K |
|
|
FBRT
6349
PUT
Franklin BSP Realty Trust
FBRT
$630M
| $45K | ﹤0.01% |
3,400
+2,200
| +183% | +$28.7K |
|
6350
Fulton Financial
FULT
$4.66B
| $45K | ﹤0.01% |
2,892
+963
| +50% | +$15K |
|
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.