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 | |
|---|---|---|---|---|---|---|
|
OGI
5726
CALL
Organigram Holdings
OGI
$132M
| $87K | ﹤0.01% |
+40,800
| New | +$78.9K |
|
5727
PUT
Silgan Holdings
SLGN
$4.23B
| $87K | ﹤0.01% |
1,800
+1,300
| +260% | +$57.7K |
|
|
SVC
5728
Service Properties Trust
SVC
$1.04B
| $87K | ﹤0.01% |
+2,572
| New | +$95.4K |
|
5729
Travere Therapeutics
TVTX
$5.2B
| $87K | ﹤0.01% |
+11,398
| New | +$96.2K |
|
|
QVCGA
5730
CALL
DELISTED
QVC Group Inc Series A
QVCGA
| $87K | ﹤0.01% |
1,428
-2,874
| -67% | -$150K |
|
5731
PUT
Avient
AVNT
$3.33B
| $86K | ﹤0.01% |
+2,000
| New | +$77.9K |
|
5732
Avantis US Small Cap Value ETF
AVUV
$30.3B
| $86K | ﹤0.01% |
+928
| New | +$82.1K |
|
5733
BioCryst Pharmaceuticals
BCRX
$2.28B
| $86K | ﹤0.01% |
+17,095
| New | +$96.1K |
|
5734
CALL
Cannae Holdings
CNNE
$639M
| $86K | ﹤0.01% |
+3,900
| New | +$82.4K |
|
|
VISN
5735
PUT
Vistance Networks Inc
VISN
$2.65B
| $86K | ﹤0.01% |
65,900
+45,100
| +217% | +$88.9K |
|
5736
PUT
DNOW Inc
DNOW
$2.58B
| $86K | ﹤0.01% |
5,700
-1,600
| -22% | -$19.3K |
|
5737
PUT
Emergent Biosolutions
EBS
$373M
| $86K | ﹤0.01% |
34,100
-7,900
| -19% | -$17.8K |
|
5738
Encore Capital Group
ECPG
$2.02B
| $86K | ﹤0.01% |
1,899
+1,040
| +121% | +$51.3K |
|
5739
CALL
John Hancock Multifactor Large Cap ETF
JHML
$1.17B
| $86K | ﹤0.01% |
+1,500
| New | +$91.7K |
|
5740
CALL
Kemper
KMPR
$1.67B
| $86K | ﹤0.01% |
1,400
-2,400
| -63% | -$138K |
|
5741
CALL
SEI Investments
SEIC
$12.4B
| $86K | ﹤0.01% |
+1,200
| New | +$79.7K |
|
5742
CALL
Surgery Partners
SGRY
$2.01B
| $86K | ﹤0.01% |
2,900
+2,800
| +2,800% | +$87.6K |
|
|
JOYY
5743
PUT
JOYY Inc
JOYY
$3.71B
| $86K | ﹤0.01% |
2,800
+600
| +27% | +$19.1K |
|
5744
CALL
AZZ Inc
AZZ
$4.35B
| $85K | ﹤0.01% |
1,100
-2,200
| -67% | -$149K |
|
5745
Inspired Entertainment
INSE
$184M
| $85K | ﹤0.01% |
8,712
-3,517
| -29% | -$32.8K |
|
|
MRUS
5746
DELISTED
Merus
MRUS
| $85K | ﹤0.01% |
1,903
-5,396
| -74% | -$219K |
|
|
MTLS
5747
CALL
Materialise
MTLS
$368M
| $85K | ﹤0.01% |
16,200
+300
| +2% | +$1.69K |
|
5748
CALL
Myriad Genetics
MYGN
$270M
| $85K | ﹤0.01% |
4,000
+2,100
| +111% | +$45.1K |
|
5749
PDS Biotechnology
PDSB
$38.4M
| $85K | ﹤0.01% |
21,653
-3,430
| -14% | -$17.7K |
|
5750
CALL
Vivani Medical
VANI
$110M
| $85K | ﹤0.01% |
+46,100
| New | +$67.9K |
|
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.