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 | |
|---|---|---|---|---|---|---|
5876
Asure Software
ASUR
$232M
| $75K | ﹤0.01% |
9,673
-23,625
| -71% | -$212K |
|
5877
PUT
Bruker
BRKR
$9.57B
| $75K | ﹤0.01% |
+800
| New | +$64.4K |
|
5878
CALL
Dolby
DLB
$5.51B
| $75K | ﹤0.01% |
900
-2,100
| -70% | -$174K |
|
|
EHAB
5879
DELISTED
Enhabit
EHAB
| $75K | ﹤0.01% |
6,443
+4,558
| +242% | +$45.7K |
|
5880
CALL
National Beverage
FIZZ
$2.96B
| $75K | ﹤0.01% |
1,600
-4,900
| -75% | -$240K |
|
5881
CALL
GoPro
GPRO
$130M
| $75K | ﹤0.01% |
33,700
-600
| -2% | -$1.6K |
|
5882
IPG Photonics
IPGP
$3.61B
| $75K | ﹤0.01% |
830
-451
| -35% | -$42.4K |
|
5883
Liberty Global Class C
LBTYK
$3.53B
| $75K | ﹤0.01% |
4,291
+2,695
| +169% | +$51.8K |
|
5884
Pixelworks
PXLW
$38.2M
| $75K | ﹤0.01% |
+2,437
| New | +$64.6K |
|
|
RDUS
5885
DELISTED
Radius Recycling
RDUS
| $75K | ﹤0.01% |
+3,564
| New | +$83.9K |
|
|
SJT
5886
CALL
San Juan Basin Royalty Trust
SJT
$117M
| $75K | ﹤0.01% |
14,300
-6,600
| -32% | -$34.4K |
|
|
TELL
5887
DELISTED
Tellurian Inc.
TELL
| $75K | ﹤0.01% |
114,668
+51,796
| +82% | +$35.1K |
|
|
OSG
5888
CALL
DELISTED
Overseas Shipholding Group Inc.
OSG
| $75K | ﹤0.01% |
+11,800
| New | +$70.4K |
|
5889
CALL
Enact Holdings
ACT
$6.61B
| $74K | ﹤0.01% |
+2,400
| New | +$68.1K |
|
|
BLDP
5890
CALL
Ballard Power Systems
BLDP
$805M
| $74K | ﹤0.01% |
26,900
-75,300
| -74% | -$237K |
|
5891
PC Connection
CNXN
$2.11B
| $74K | ﹤0.01% |
1,131
-2,058
| -65% | -$135K |
|
5892
PUT
Designer Brands
DBI
$307M
| $74K | ﹤0.01% |
6,800
-30,500
| -82% | -$292K |
|
|
FARM
5893
DELISTED
Farmer Brothers
FARM
| $74K | ﹤0.01% |
20,844
-22,796
| -52% | -$79.3K |
|
5894
Integra LifeSciences
IART
$1.29B
| $74K | ﹤0.01% |
+2,103
| New | +$84.1K |
|
|
IMMP
5895
Immutep
IMMP
$56.3M
| $74K | ﹤0.01% |
32,071
+3,686
| +13% | +$8.73K |
|
5896
PUT
Itron
ITRI
$4.36B
| $74K | ﹤0.01% |
800
-1,000
| -56% | -$80.5K |
|
|
ONL
5897
Orion Office REIT
ONL
$150M
| $74K | ﹤0.01% |
21,084
+13,613
| +182% | +$61.1K |
|
5898
PUT
Simply Good Foods
SMPL
$901M
| $74K | ﹤0.01% |
2,200
+1,000
| +83% | +$36.9K |
|
5899
Trustmark
TRMK
$2.76B
| $74K | ﹤0.01% |
+2,638
| New | +$71.2K |
|
5900
PUT
Werner Enterprises
WERN
$2.24B
| $74K | ﹤0.01% |
1,900
+1,400
| +280% | +$55.8K |
|
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.