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 | |
|---|---|---|---|---|---|---|
601
CALL
Cheniere Energy
LNG
$56B
| $20.5M | 0.01% |
117,400
+6,800
| +6% | +$1.08M |
|
602
PUT
Vale
VALE
$63.2B
| $20.4M | 0.01% |
1,829,100
+361,800
| +25% | +$4.35M |
|
603
PUT
Align Technology
ALGN
$12.4B
| $20.3M | 0.01% |
84,200
-24,100
| -22% | -$6.71M |
|
604
PUT
DaVita
DVA
$14.9B
| $20.3M | 0.01% |
146,700
-113,400
| -44% | -$15.6M |
|
605
CALL
Celsius Holdings
CELH
$7.28B
| $20.3M | 0.01% |
355,400
-219,800
| -38% | -$16.6M |
|
606
Johnson & Johnson
JNJ
$615B
| $20.3M | 0.01% |
+138,645
| New | +$20.6M |
|
607
CALL
Cummins
CMI
$91.2B
| $20.2M | 0.01% |
73,000
+18,700
| +34% | +$5.34M |
|
608
CALL
Whirlpool
WHR
$2.41B
| $20.2M | 0.01% |
197,700
+48,300
| +32% | +$4.71M |
|
609
CALL
First Citizens BancShares
FCNCA
$24.1B
| $20.2M | 0.01% |
12,000
-5,300
| -31% | -$8.87M |
|
610
CALL
KLA
KLAC
$280B
| $20.2M | 0.01% |
245,000
-269,000
| -52% | -$19.9M |
|
611
PUT
Skyworks Solutions
SWKS
$9.5B
| $20.2M | 0.01% |
189,300
+47,900
| +34% | +$4.72M |
|
612
PUT
HCA Healthcare
HCA
$82.5B
| $20.1M | 0.01% |
62,600
+4,600
| +8% | +$1.49M |
|
613
PUT
Prudential Financial
PRU
$41.3B
| $20M | 0.01% |
170,800
-13,800
| -7% | -$1.59M |
|
614
PUT
Expedia Group
EXPE
$31.3B
| $20M | 0.01% |
158,700
-23,700
| -13% | -$2.92M |
|
615
CALL
XPO
XPO
$25.1B
| $19.9M | 0.01% |
187,900
-1,500
| -0.8% | -$168K |
|
616
CALL
Wingstop
WING
$3.76B
| $19.9M | 0.01% |
47,000
-47,900
| -50% | -$18.4M |
|
|
617
CALL
Expedia Group
EXPE
$31.3B
| $19.9M | 0.01% |
157,600
-35,900
| -19% | -$4.43M |
|
|
FISV
618
CALL
Fiserv Inc
FISV
$26.8B
| $19.9M | 0.01% |
133,200
+6,800
| +5% | +$1.03M |
|
619
PUT
PG&E
PCG
$39.9B
| $19.8M | 0.01% |
1,820,900
+851,100
| +88% | +$15M |
|
620
CALL
Suncor Energy
SU
$76.4B
| $19.8M | 0.01% |
537,400
-195,800
| -27% | -$7.57M |
|
|
WBA
621
PUT
DELISTED
Walgreens Boots Alliance
WBA
| $19.8M | 0.01% |
1,639,100
-420,900
| -20% | -$7.14M |
|
622
CALL
Las Vegas Sands
LVS
$30B
| $19.8M | 0.01% |
447,000
+44,000
| +11% | +$2.05M |
|
623
CALL
Cboe Global Markets
CBOE
$29.5B
| $19.8M | 0.01% |
116,300
-12,700
| -10% | -$2.26M |
|
624
lululemon athletica
LULU
$12.9B
| $19.7M | 0.01% |
65,959
+51,907
| +369% | +$17.4M |
|
625
CALL
Regeneron Pharmaceuticals
REGN
$68.3B
| $19.7M | 0.01% |
18,700
-2,700
| -13% | -$2.62M |
|
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.