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 | |
|---|---|---|---|---|---|---|
4676
CALL
3D Systems Corp
DDD
$405M
| $233K | ﹤0.01% |
52,600
-1,500
| -3% | -$7.38K |
|
4677
PUT
inTEST
INTT
$143M
| $233K | ﹤0.01% |
17,600
+16,700
| +1,856% | +$198K |
|
4678
PUT
AllianceBernstein
AB
$3.47B
| $232K | ﹤0.01% |
6,700
+3,000
| +81% | +$99.7K |
|
4679
CALL
AvePoint
AVPT
$2.76B
| $232K | ﹤0.01% |
29,400
-47,700
| -62% | -$375K |
|
4680
PUT
Brookfield Renewable
BEP
$9.6B
| $232K | ﹤0.01% |
10,000
-8,500
| -46% | -$207K |
|
|
DOCU
4681
DocuSign
DOCU
$11.1B
| $232K | ﹤0.01% |
+3,900
| New | +$220K |
|
4682
CALL
Dream Finders Homes
DFH
$1.41B
| $231K | ﹤0.01% |
5,300
+5,200
| +5,200% | +$183K |
|
4683
Evergy
EVRG
$19.4B
| $231K | ﹤0.01% |
4,332
+2,954
| +214% | +$151K |
|
|
AMED
4684
CALL
DELISTED
Amedisys
AMED
| $230K | ﹤0.01% |
2,500
-400
| -14% | -$37.5K |
|
4685
GrowGeneration
GRWG
$84.7M
| $230K | ﹤0.01% |
80,530
+64,735
| +410% | +$149K |
|
4686
PUT
Haemonetics
HAE
$3.88B
| $230K | ﹤0.01% |
2,700
+2,500
| +1,250% | +$196K |
|
4687
PUT
PROG Holdings
PRG
$1.71B
| $230K | ﹤0.01% |
6,700
+2,700
| +68% | +$84.9K |
|
|
PSTL
4688
CALL
Postal Realty Trust
PSTL
$703M
| $230K | ﹤0.01% |
16,100
+13,000
| +419% | +$184K |
|
4689
Global X Cybersecurity ETF
BUG
$1.25B
| $229K | ﹤0.01% |
7,726
-6,321
| -45% | -$190K |
|
4690
PUT
FirstCash
FCFS
$8.77B
| $229K | ﹤0.01% |
1,800
-11,900
| -87% | -$1.38M |
|
|
FPI
4691
CALL
Farmland Partners
FPI
$415M
| $229K | ﹤0.01% |
20,700
+13,400
| +184% | +$151K |
|
4692
Hudbay
HBM
$9.76B
| $229K | ﹤0.01% |
32,727
-146,300
| -82% | -$851K |
|
4693
CALL
NETSCOUT
NTCT
$2.83B
| $229K | ﹤0.01% |
10,500
+10,400
| +10,400% | +$226K |
|
4694
PUT
United Bankshares
UBSI
$6.69B
| $229K | ﹤0.01% |
6,400
-7,500
| -54% | -$265K |
|
4695
PUT
Essential Utilities
WTRG
$11.5B
| $229K | ﹤0.01% |
6,200
-116,300
| -95% | -$4.22M |
|
4696
PUT
Algonquin Power & Utilities
AQN
$4.59B
| $228K | ﹤0.01% |
36,200
-1,500
| -4% | -$9.09K |
|
4697
PUT
Canadian Imperial Bank of Commerce
CM
$106B
| $228K | ﹤0.01% |
4,500
-6,800
| -60% | -$321K |
|
4698
PUT
IDEAYA Biosciences
IDYA
$3.43B
| $228K | ﹤0.01% |
5,200
+4,700
| +940% | +$202K |
|
4699
CALL
ReNew
RNW
$2.18B
| $228K | ﹤0.01% |
38,000
-200
| -0.5% | -$1.32K |
|
|
VRNT
4700
CALL
DELISTED
Verint Systems
VRNT
| $228K | ﹤0.01% |
6,900
+300
| +5% | +$8.98K |
|
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.