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 | |
|---|---|---|---|---|---|---|
551
Robinhood
HOOD
$93.8B
| $23.4M | 0.01% |
1,029,854
+394,396
| +62% | +$7.72M |
|
552
PUT
Medtronic
MDT
$105B
| $23.3M | 0.01% |
296,400
-205,300
| -41% | -$16.8M |
|
553
CALL
Diamondback Energy
FANG
$57.1B
| $23.3M | 0.01% |
116,500
-152,900
| -57% | -$30.4M |
|
554
CALL
Tenet Healthcare
THC
$16.8B
| $23.3M | 0.01% |
175,000
+40,300
| +30% | +$4.85M |
|
555
CALL
GE HealthCare
GEHC
$27.9B
| $23.2M | 0.01% |
298,000
+124,100
| +71% | +$10.1M |
|
556
PUT
KKR & Co
KKR
$85.8B
| $23.2M | 0.01% |
220,600
+57,000
| +35% | +$5.8M |
|
557
PUT
Cencora
COR
$58.5B
| $23.2M | 0.01% |
102,900
+38,300
| +59% | +$8.87M |
|
558
Bristol-Myers Squibb
BMY
$124B
| $23.2M | 0.01% |
558,011
+54,263
| +11% | +$2.43M |
|
559
PUT
D.R. Horton
DHI
$40.4B
| $22.9M | 0.01% |
162,600
-164,600
| -50% | -$24.2M |
|
560
PUT
Hewlett Packard
HPE
$63.7B
| $22.8M | 0.01% |
1,079,100
+232,700
| +27% | +$4.29M |
|
561
CALL
Dollar Tree
DLTR
$23.5B
| $22.8M | 0.01% |
213,900
-133,700
| -38% | -$15.8M |
|
562
PUT
AB InBev
BUD
$161B
| $22.8M | 0.01% |
392,700
+121,200
| +45% | +$7.42M |
|
563
CALL
US Bancorp Series B Preferred Stock
USB.PRH
$747M
| $22.8M | 0.01% |
574,300
-176,900
| -24% | -$3.72M |
|
564
CALL
Zillow
Z
$7.18B
| $22.8M | 0.01% |
493,600
-602,700
| -55% | -$26.5M |
|
565
PUT
Burlington
BURL
$22.3B
| $22.6M | 0.01% |
94,200
+53,300
| +130% | +$11M |
|
566
PUT
Cheniere Energy
LNG
$56B
| $22.6M | 0.01% |
129,300
-30,000
| -19% | -$4.78M |
|
567
CALL
Hims & Hers Health
HIMS
$7.33B
| $22.5M | 0.01% |
1,116,700
+732,200
| +190% | +$12.2M |
|
568
PUT
Insmed
INSM
$23.1B
| $22.5M | 0.01% |
335,100
+39,400
| +13% | +$1.53M |
|
|
569
CALL
D.R. Horton
DHI
$40.4B
| $22.4M | 0.01% |
158,800
-45,900
| -22% | -$6.74M |
|
570
CALL
Nucor
NUE
$53.7B
| $22.1M | 0.01% |
139,700
-62,000
| -31% | -$10.8M |
|
571
PUT
Unity
U
$12.8B
| $22M | 0.01% |
1,354,000
+239,400
| +21% | +$5.12M |
|
|
CYBR
572
CALL
DELISTED
CyberArk
CYBR
| $22M | 0.01% |
80,500
+9,400
| +13% | +$2.31M |
|
573
PUT
Microchip Technology
MCHP
$46.2B
| $22M | 0.01% |
240,400
+15,100
| +7% | +$1.38M |
|
574
UnitedHealth
UNH
$392B
| $22M | 0.01% |
43,158
+9,433
| +28% | +$4.62M |
|
575
PUT
Whirlpool
WHR
$2.41B
| $21.9M | 0.01% |
214,700
+112,000
| +109% | +$10.9M |
|
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.