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 | |
|---|---|---|---|---|---|---|
1551
CALL
Kenvue
KVUE
$37B
| $4.29M | ﹤0.01% |
235,800
-395,100
| -63% | -$7.65M |
|
1552
PUT
Ciena
CIEN
$55.3B
| $4.28M | ﹤0.01% |
88,800
-40,300
| -31% | -$1.91M |
|
1553
State Street Industrial Select Sector SPDR ETF
XLI
$33.9B
| $4.25M | ﹤0.01% |
+34,907
| New | +$4.3M |
|
1554
PUT
AvePoint
AVPT
$2.6B
| $4.25M | ﹤0.01% |
408,200
+126,100
| +45% | +$1.09M |
|
1555
Cigna
CI
$76.6B
| $4.25M | ﹤0.01% |
12,859
-16,554
| -56% | -$5.71M |
|
1556
PUT
Trip.com Group
TCOM
$27.5B
| $4.24M | ﹤0.01% |
90,200
-187,400
| -68% | -$9.54M |
|
1557
CALL
WillScot Mobile Mini Holdings
WSC
$4.8B
| $4.23M | ﹤0.01% |
112,300
-32,600
| -22% | -$1.29M |
|
1558
CALL
O'Reilly Automotive
ORLY
$72.4B
| $4.22M | ﹤0.01% |
60,000
-75,000
| -56% | -$5.18M |
|
|
SWN
1559
CALL
DELISTED
Southwestern Energy Company
SWN
| $4.22M | ﹤0.01% |
627,100
-60,900
| -9% | -$445K |
|
1560
CALL
Armstrong World Industries
AWI
$6.86B
| $4.21M | ﹤0.01% |
37,200
-500
| -1% | -$58K |
|
1561
CALL
PBF Energy
PBF
$7.29B
| $4.21M | ﹤0.01% |
91,500
-113,600
| -55% | -$5.82M |
|
1562
CALL
Ingersoll Rand
IR
$33B
| $4.21M | ﹤0.01% |
46,300
+800
| +2% | +$73.5K |
|
|
1563
Kenvue
KVUE
$37B
| $4.21M | ﹤0.01% |
231,311
+138,954
| +150% | +$2.69M |
|
1564
CALL
MP Materials
MP
$7.35B
| $4.2M | ﹤0.01% |
330,100
+103,800
| +46% | +$1.63M |
|
1565
CALL
HDFC Bank
HDB
$119B
| $4.2M | ﹤0.01% |
130,600
+88,800
| +212% | +$2.6M |
|
1566
CALL
ICICI Bank
IBN
$106B
| $4.19M | ﹤0.01% |
145,500
+30,600
| +27% | +$820K |
|
1567
PUT
Alaska Air
ALK
$5.15B
| $4.18M | ﹤0.01% |
103,600
+12,700
| +14% | +$539K |
|
1568
PUT
Radware
RDWR
$1.24B
| $4.17M | ﹤0.01% |
228,900
-16,000
| -7% | -$292K |
|
1569
PUT
Aon
AON
$77.3B
| $4.17M | ﹤0.01% |
14,200
-15,900
| -53% | -$4.7M |
|
1570
PUT
Becton Dickinson
BDX
$43.1B
| $4.16M | ﹤0.01% |
17,800
-16,300
| -48% | -$3.84M |
|
1571
PUT
Starwood Property Trust
STWD
$6.12B
| $4.16M | ﹤0.01% |
219,600
+135,200
| +160% | +$2.63M |
|
1572
CALL
SiriusXM
SIRI
$10B
| $4.16M | ﹤0.01% |
146,890
+4,370
| +3% | +$131K |
|
1573
CALL
Everest Group
EG
$15.2B
| $4.15M | ﹤0.01% |
10,900
+6,800
| +166% | +$2.57M |
|
1574
CALL
Axcelis
ACLS
$4.12B
| $4.15M | ﹤0.01% |
29,200
-22,900
| -44% | -$2.64M |
|
1575
CALL
Allstate
ALL
$66.9B
| $4.15M | ﹤0.01% |
26,000
-85,200
| -77% | -$14.2M |
|
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.