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 | |
|---|---|---|---|---|---|---|
1251
CALL
Vornado Realty Trust
VNO
$7.47B
| $6.74M | ﹤0.01% |
256,400
+42,300
| +20% | +$1.08M |
|
1252
ProShares Bitcoin Strategy ETF
BITO
$1.4B
| $6.72M | ﹤0.01% |
298,798
-607,693
| -67% | -$16.3M |
|
1253
CALL
Idexx Laboratories
IDXX
$42.9B
| $6.72M | ﹤0.01% |
13,800
+5,400
| +64% | +$2.71M |
|
1254
CALL
Papa John's
PZZA
$999M
| $6.72M | ﹤0.01% |
143,100
+107,400
| +301% | +$5.88M |
|
1255
PUT
Celestica
CLS
$35.1B
| $6.72M | ﹤0.01% |
117,200
+3,900
| +3% | +$197K |
|
|
SAVE
1256
PUT
DELISTED
Spirit Airlines, Inc.
SAVE
| $6.71M | ﹤0.01% |
1,834,900
+436,600
| +31% | +$1.69M |
|
1257
PUT
Agilent Technologies
A
$39.1B
| $6.66M | ﹤0.01% |
51,400
-62,800
| -55% | -$8.78M |
|
1258
Unity
U
$12.5B
| $6.64M | ﹤0.01% |
408,479
+323,322
| +380% | +$6.92M |
|
1259
PUT
State Street
STT
$50.9B
| $6.64M | ﹤0.01% |
89,700
-9,900
| -10% | -$738K |
|
1260
Direxion Daily 20+ Year Treasury Bull 3X ETF
TMF
$2.22B
| $6.63M | ﹤0.01% |
136,749
+69,188
| +102% | +$3.36M |
|
1261
PUT
PVH
PVH
$3.71B
| $6.63M | ﹤0.01% |
62,600
-18,000
| -22% | -$2.04M |
|
1262
CALL
Iris Energy
IREN
$13.2B
| $6.61M | ﹤0.01% |
585,500
+139,800
| +31% | +$1.05M |
|
|
FL
1263
CALL
DELISTED
Foot Locker
FL
| $6.6M | ﹤0.01% |
265,000
-337,400
| -56% | -$8.03M |
|
1264
PUT
Keurig Dr Pepper
KDP
$40.4B
| $6.59M | ﹤0.01% |
197,200
+91,700
| +87% | +$3.04M |
|
1265
PUT
Teck Resources
TECK
$29.5B
| $6.58M | ﹤0.01% |
137,400
-576,900
| -81% | -$28.4M |
|
1266
PUT
Helen of Troy
HELE
$663M
| $6.57M | ﹤0.01% |
70,800
+24,200
| +52% | +$2.45M |
|
1267
CALL
Fair Isaac
FICO
$28.7B
| $6.55M | ﹤0.01% |
4,400
-500
| -10% | -$646K |
|
1268
PUT
First Majestic Silver
AG
$8.05B
| $6.54M | ﹤0.01% |
1,104,900
+415,300
| +60% | +$2.88M |
|
1269
PUT
UBS Group
UBS
$170B
| $6.52M | ﹤0.01% |
220,800
-31,600
| -13% | -$939K |
|
1270
CALL
YPF
YPF
$20.2B
| $6.49M | ﹤0.01% |
322,800
+9,800
| +3% | +$211K |
|
1271
CALL
Alpha Metallurgical Resources
AMR
$1.82B
| $6.48M | ﹤0.01% |
23,100
-32,500
| -58% | -$10.1M |
|
1272
PUT
Xcel Energy
XEL
$51B
| $6.45M | ﹤0.01% |
120,800
-57,100
| -32% | -$3.11M |
|
1273
CALL
Sprouts Farmers Market
SFM
$7.04B
| $6.44M | ﹤0.01% |
77,000
+19,600
| +34% | +$1.43M |
|
|
SEE
1274
PUT
DELISTED
Sealed Air
SEE
| $6.44M | ﹤0.01% |
185,000
-83,400
| -31% | -$2.97M |
|
1275
CALL
AngloGold Ashanti
AU
$40.3B
| $6.42M | ﹤0.01% |
255,700
+57,900
| +29% | +$1.37M |
|
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.