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 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4826
Algoma Steel
ASTL
$450M
| $166K | ﹤0.01% |
23,859
+18,337
| +332% | +$142K |
|
|
CCC
4827
CALL
CCC Intelligent Solutions
CCC
$3.55B
| $166K | ﹤0.01% |
15,000
-100
| -0.7% | -$1.14K |
|
|
ETWO
4828
PUT
DELISTED
E2open Parent Holdings
ETWO
| $166K | ﹤0.01% |
37,100
-400
| -1% | -$1.8K |
|
4829
PUT
Nu Skin
NUS
$257M
| $166K | ﹤0.01% |
15,800
+6,700
| +74% | +$84.9K |
|
4830
Portillo's
PTLO
$345M
| $166K | ﹤0.01% |
17,127
+13,808
| +416% | +$154K |
|
4831
CALL
Scilex Holding
SCLX
$46.1M
| $166K | ﹤0.01% |
2,469
+998
| +68% | +$42.1K |
|
4832
PUT
SLM Corp
SLM
$4.83B
| $166K | ﹤0.01% |
8,000
-15,100
| -65% | -$318K |
|
4833
CALL
Delek Logistics
DKL
$3.12B
| $165K | ﹤0.01% |
4,100
+3,200
| +356% | +$126K |
|
4834
PUT
Green Brick Partners
GRBK
$3.09B
| $165K | ﹤0.01% |
2,900
-1,400
| -33% | -$78.2K |
|
4835
CALL
Krystal Biotech
KRYS
$10.7B
| $165K | ﹤0.01% |
900
-41,000
| -98% | -$6.88M |
|
4836
CALL
Strategic Education
STRA
$1.98B
| $165K | ﹤0.01% |
1,500
| – | – |
|
4837
PUT
W.R. Berkley
WRB
$28.1B
| $165K | ﹤0.01% |
3,150
+900
| +40% | +$48.2K |
|
4838
PUT
Applied Digital
APLD
$6.68B
| $164K | ﹤0.01% |
27,600
-61,700
| -69% | -$239K |
|
4839
BioCryst Pharmaceuticals
BCRX
$2.42B
| $164K | ﹤0.01% |
26,565
+9,470
| +55% | +$52.3K |
|
4840
CALL
BOK Financial
BOKF
$8.58B
| $164K | ﹤0.01% |
1,800
-8,200
| -82% | -$741K |
|
4841
PUT
Coty
COTY
$2.4B
| $164K | ﹤0.01% |
16,400
-19,800
| -55% | -$212K |
|
4842
PUT
Jones Lang LaSalle
JLL
$15.8B
| $164K | ﹤0.01% |
800
+100
| +14% | +$19.4K |
|
4843
Methanex
MEOH
$4.23B
| $164K | ﹤0.01% |
3,400
-2,889
| -46% | -$144K |
|
4844
Sweetgreen
SG
$756M
| $164K | ﹤0.01% |
5,469
-32,119
| -85% | -$881K |
|
4845
Vital Farms
VITL
$586M
| $164K | ﹤0.01% |
+3,510
| New | +$121K |
|
4846
PUT
Valmont Industries
VMI
$8.81B
| $164K | ﹤0.01% |
600
-2,000
| -77% | -$488K |
|
|
VRNT
4847
PUT
DELISTED
Verint Systems
VRNT
| $164K | ﹤0.01% |
5,100
+4,800
| +1,600% | +$153K |
|
|
PDCO
4848
PUT
DELISTED
Patterson Companies, Inc.
PDCO
| $164K | ﹤0.01% |
6,800
+5,000
| +278% | +$125K |
|
4849
CALL
Bio-Rad Laboratories Class A
BIO
$8.76B
| $163K | ﹤0.01% |
600
-2,900
| -83% | -$843K |
|
4850
Liberty Global Class C
LBTYK
$3.5B
| $163K | ﹤0.01% |
9,137
+4,846
| +113% | +$84.4K |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.