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 | |
|---|---|---|---|---|---|---|
2276
PUT
Corporacion America
CAAP
$4.11B
| $1.86M | ﹤0.01% |
112,100
+107,300
| +2,235% | +$1.87M |
|
|
ANSS
2277
CALL
DELISTED
Ansys
ANSS
| $1.86M | ﹤0.01% |
5,800
-5,000
| -46% | -$1.64M |
|
2278
Zimmer Biomet
ZBH
$17.7B
| $1.86M | ﹤0.01% |
17,170
+6,880
| +67% | +$811K |
|
2279
PUT
Atkore
ATKR
$2.59B
| $1.86M | ﹤0.01% |
13,800
+12,300
| +820% | +$1.96M |
|
2280
Cipher Digital
CIFR
$9.47B
| $1.86M | ﹤0.01% |
448,304
-104,087
| -19% | -$431K |
|
2281
PUT
Global Ship Lease
GSL
$1.57B
| $1.86M | ﹤0.01% |
64,600
-65,200
| -50% | -$1.65M |
|
2282
PUT
NuScale Power
SMR
$2.8B
| $1.86M | ﹤0.01% |
159,100
-53,400
| -25% | -$380K |
|
2283
Solventum
SOLV
$13.5B
| $1.85M | ﹤0.01% |
+35,065
| New | +$2.13M |
|
2284
Acadia Healthcare
ACHC
$3.17B
| $1.85M | ﹤0.01% |
+27,412
| New | +$1.91M |
|
2285
PUT
Healthcare Realty
HR
$7.42B
| $1.85M | ﹤0.01% |
112,300
+73,700
| +191% | +$1.13M |
|
2286
CALL
Gates Industrial Corporation Ltd.
GTES
$6.81B
| $1.85M | ﹤0.01% |
117,000
+85,100
| +267% | +$1.44M |
|
2287
CALL
Eagle Materials
EXP
$6.6B
| $1.85M | ﹤0.01% |
8,500
-2,500
| -23% | -$612K |
|
|
2288
PUT
Cipher Digital
CIFR
$9.47B
| $1.85M | ﹤0.01% |
445,100
-213,600
| -32% | -$884K |
|
2289
PUT
Alliance Resource Partners
ARLP
$3.18B
| $1.83M | ﹤0.01% |
74,900
-84,800
| -53% | -$1.92M |
|
2290
PUT
Northern Trust
NTRS
$22.2B
| $1.83M | ﹤0.01% |
21,800
+11,600
| +114% | +$974K |
|
2291
PUT
Republic Services
RSG
$66.7B
| $1.83M | ﹤0.01% |
9,400
-400
| -4% | -$75.5K |
|
2292
US Foods
USFD
$21.4B
| $1.82M | ﹤0.01% |
34,429
+27,956
| +432% | +$1.47M |
|
2293
PUT
Helmerich & Payne
HP
$3.53B
| $1.82M | ﹤0.01% |
50,400
-26,500
| -34% | -$1.02M |
|
2294
CALL
Gran Tierra Energy
GTE
$260M
| $1.82M | ﹤0.01% |
188,000
+11,400
| +6% | +$102K |
|
2295
CALL
Crown Holdings
CCK
$12.8B
| $1.81M | ﹤0.01% |
24,400
-85,900
| -78% | -$6.93M |
|
2296
PUT
Avery Dennison
AVY
$12.3B
| $1.81M | ﹤0.01% |
8,300
+3,900
| +89% | +$866K |
|
2297
CALL
Gaming and Leisure Properties
GLPI
$12.8B
| $1.81M | ﹤0.01% |
40,100
+5,200
| +15% | +$230K |
|
|
GRFS
2298
Grifois
GRFS
$5.16B
| $1.81M | ﹤0.01% |
287,352
+51,397
| +22% | +$357K |
|
2299
PUT
Leonardo DRS
DRS
$12.8B
| $1.81M | ﹤0.01% |
70,800
+23,700
| +50% | +$542K |
|
|
AGEN
2300
PUT
Agenus
AGEN
$249M
| $1.8M | ﹤0.01% |
107,800
+102,800
| +2,056% | +$1.24M |
|
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.