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 | |
|---|---|---|---|---|---|---|
1076
CALL
TE Connectivity
TEL
$58.5B
| $8.98M | 0.01% |
59,700
+46,000
| +336% | +$6.75M |
|
1077
CALL
Invesco S&P SmallCap Low Volatility ETF
XSLV
$251M
| $8.97M | 0.01% |
186,200
-107,300
| -37% | -$4.64M |
|
1078
CALL
GoDaddy
GDDY
$12.4B
| $8.97M | 0.01% |
64,200
-52,600
| -45% | -$6.94M |
|
1079
CALL
Logitech
LOGI
$15.1B
| $8.96M | 0.01% |
92,500
-5,300
| -5% | -$477K |
|
1080
CALL
Boot Barn
BOOT
$4.59B
| $8.93M | 0.01% |
69,300
+57,000
| +463% | +$6.42M |
|
1081
CALL
Western Alliance Bancorporation
WAL
$9.11B
| $8.93M | 0.01% |
142,200
-113,200
| -44% | -$6.85M |
|
1082
Analog Devices
ADI
$181B
| $8.92M | 0.01% |
+39,069
| New | +$8.34M |
|
1083
PUT
Centene
CNC
$31.3B
| $8.92M | 0.01% |
134,500
+39,900
| +42% | +$2.9M |
|
1084
CALL
Starwood Property Trust
STWD
$6.12B
| $8.9M | 0.01% |
469,700
-49,500
| -10% | -$964K |
|
|
CMA
1085
PUT
DELISTED
Comerica
CMA
| $8.89M | 0.01% |
174,200
-150,600
| -46% | -$7.69M |
|
1086
Air Products & Chemicals
APD
$66.4B
| $8.89M | 0.01% |
34,448
+26,610
| +339% | +$6.75M |
|
1087
PUT
MGM Resorts International
MGM
$11.8B
| $8.89M | 0.01% |
200,000
-49,400
| -20% | -$2.06M |
|
1088
Wynn Resorts
WYNN
$10.2B
| $8.86M | 0.01% |
99,037
+72,622
| +275% | +$6.97M |
|
1089
PUT
Tidewater
TDW
$3.91B
| $8.84M | 0.01% |
92,800
-110,800
| -54% | -$10.9M |
|
1090
PUT
argenx
ARGX
$57.5B
| $8.81M | 0.01% |
20,500
+5,300
| +35% | +$2.03M |
|
1091
CALL
Dynatrace
DT
$12.1B
| $8.8M | 0.01% |
196,700
-138,800
| -41% | -$6.4M |
|
1092
CALL
M&T Bank
MTB
$36.1B
| $8.79M | 0.01% |
58,100
+8,500
| +17% | +$1.24M |
|
1093
PUT
Toyota
TM
$212B
| $8.79M | 0.01% |
42,900
-31,800
| -43% | -$7.03M |
|
1094
CALL
Carlyle Group
CG
$16.3B
| $8.78M | 0.01% |
218,800
-109,500
| -33% | -$4.73M |
|
1095
Hewlett Packard
HPE
$63.8B
| $8.78M | 0.01% |
414,679
+293,768
| +243% | +$5.41M |
|
1096
CALL
Insmed
INSM
$23.1B
| $8.78M | 0.01% |
131,000
+104,900
| +402% | +$4.07M |
|
1097
Seagate
STX
$199B
| $8.77M | 0.01% |
+84,896
| New | +$7.93M |
|
1098
CALL
Semtech
SMTC
$12.2B
| $8.77M | 0.01% |
293,400
+76,600
| +35% | +$2.68M |
|
1099
PUT
Bunge Global
BG
$23.8B
| $8.76M | 0.01% |
82,000
+19,200
| +31% | +$2.01M |
|
1100
Lamb Weston
LW
$6.72B
| $8.71M | 0.01% |
103,628
+68,597
| +196% | +$5.85M |
|
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.