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 | |
|---|---|---|---|---|---|---|
4201
PUT
Essential Properties Realty Trust
EPRT
$6.94B
| $304K | ﹤0.01% |
11,000
+7,200
| +189% | +$192K |
|
4202
PUT
JFrog
FROG
$9.26B
| $304K | ﹤0.01% |
8,100
-48,300
| -86% | -$1.77M |
|
4203
iShares US Home Construction ETF
ITB
$2.41B
| $304K | ﹤0.01% |
3,012
-19,383
| -87% | -$2.05M |
|
4204
PUT
Paysafe
PSFE
$463M
| $304K | ﹤0.01% |
17,200
+3,600
| +26% | +$59.9K |
|
|
SAND
4205
CALL
DELISTED
Sandstorm Gold
SAND
| $304K | ﹤0.01% |
55,900
-70,200
| -56% | -$388K |
|
|
CIM
4206
PUT
Chimera Investment
CIM
$1.06B
| $303K | ﹤0.01% |
23,700
+4,100
| +21% | +$51.9K |
|
4207
CALL
California Resources
CRC
$4.38B
| $303K | ﹤0.01% |
5,700
-1,200
| -17% | -$61.2K |
|
4208
PUT
Hilton Grand Vacations
HGV
$4.14B
| $303K | ﹤0.01% |
7,500
+7,200
| +2,400% | +$306K |
|
|
MGIC
4209
PUT
DELISTED
Magic Software Enterprises
MGIC
| $303K | ﹤0.01% |
31,500
+4,100
| +15% | +$46.1K |
|
4210
The RealReal
REAL
$1.44B
| $303K | ﹤0.01% |
95,211
+47,088
| +98% | +$174K |
|
4211
PUT
Simply Good Foods
SMPL
$941M
| $303K | ﹤0.01% |
8,400
+6,200
| +282% | +$222K |
|
4212
Burlington
BURL
$23.3B
| $302K | ﹤0.01% |
1,261
-11,133
| -90% | -$2.29M |
|
4213
PUT
Rollins
ROL
$18.8B
| $302K | ﹤0.01% |
6,200
-500
| -7% | -$23.1K |
|
4214
Republic Services
RSG
$66.6B
| $302K | ﹤0.01% |
1,559
-4,159
| -73% | -$785K |
|
|
SF
4215
PUT
Stifel
SF
$12.8B
| $302K | ﹤0.01% |
5,400
-20,550
| -79% | -$1.09M |
|
|
ALTM
4216
PUT
DELISTED
Arcadium Lithium plc
ALTM
| $302K | ﹤0.01% |
89,900
-52,800
| -37% | -$221K |
|
4217
CALL
Actinium Pharmaceuticals
ATNM
$27.2M
| $301K | ﹤0.01% |
40,700
+2,000
| +5% | +$16.5K |
|
|
HPP
4218
PUT
Hudson Pacific Properties
HPP
$765M
| $301K | ﹤0.01% |
8,957
+528
| +6% | +$19.9K |
|
4219
PUT
Powell Industries
POWL
$7.32B
| $301K | ﹤0.01% |
6,300
-17,700
| -74% | -$923K |
|
|
CUTR
4220
PUT
DELISTED
Cutera, Inc.
CUTR
| $301K | ﹤0.01% |
199,900
+91,700
| +85% | +$184K |
|
4221
Antero Resources
AR
$10.5B
| $300K | ﹤0.01% |
9,200
-210,640
| -96% | -$6.89M |
|
4222
Bio-Techne
TECH
$11.2B
| $300K | ﹤0.01% |
4,197
-2,427
| -37% | -$179K |
|
4223
CALL
Astrana Health
ASTH
$1.88B
| $300K | ﹤0.01% |
7,400
-5,400
| -42% | -$214K |
|
4224
Atea Pharmaceuticals
AVIR
$361M
| $299K | ﹤0.01% |
90,337
-26,318
| -23% | -$98.1K |
|
4225
Amdocs
DOX
$5.83B
| $299K | ﹤0.01% |
+3,800
| New | +$312K |
|
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.