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 | |
|---|---|---|---|---|---|---|
1101
CALL
MPLX
MPLX
$59.2B
| $8.67M | 0.01% |
203,600
-180,900
| -47% | -$7.45M |
|
1102
PUT
Alpha Metallurgical Resources
AMR
$1.78B
| $8.67M | 0.01% |
30,900
-3,700
| -11% | -$1.15M |
|
1103
CALL
Reddit
RDDT
$32.9B
| $8.65M | 0.01% |
135,400
-98,500
| -42% | -$5.19M |
|
1104
CALL
Realty Income
O
$60.9B
| $8.63M | 0.01% |
163,400
-203,000
| -55% | -$10.8M |
|
|
HUT
1105
PUT
Hut 8
HUT
$12.9B
| $8.63M | 0.01% |
575,700
+288,400
| +100% | +$2.78M |
|
1106
CALL
AST SpaceMobile
ASTS
$17.1B
| $8.61M | 0.01% |
741,900
+509,200
| +219% | +$2.66M |
|
1107
CALL
Tapestry
TPR
$28.7B
| $8.61M | 0.01% |
201,200
-116,900
| -37% | -$4.89M |
|
1108
CALL
Royal Gold
RGLD
$17.2B
| $8.6M | 0.01% |
68,700
-44,300
| -39% | -$5.53M |
|
1109
CALL
Royal Bank of Canada
RY
$291B
| $8.6M | 0.01% |
80,800
-18,400
| -19% | -$1.89M |
|
|
1110
PUT
MPLX
MPLX
$59.2B
| $8.57M | 0.01% |
201,300
-65,000
| -24% | -$2.68M |
|
1111
CALL
Ventas
VTR
$48.4B
| $8.57M | 0.01% |
167,200
+20,400
| +14% | +$955K |
|
1112
PUT
Interactive Brokers
IBKR
$40.6B
| $8.57M | 0.01% |
279,600
-627,600
| -69% | -$18.7M |
|
1113
CleanSpark
CLSK
$3.87B
| $8.56M | 0.01% |
536,880
+207,596
| +63% | +$3.49M |
|
1114
PUT
Public Service Enterprise Group
PEG
$40.1B
| $8.56M | 0.01% |
116,200
-40,700
| -26% | -$2.89M |
|
1115
CALL
Exelixis
EXEL
$13.9B
| $8.55M | 0.01% |
380,700
+207,000
| +119% | +$4.59M |
|
1116
American Airlines Group
AAL
$9.57B
| $8.55M | 0.01% |
+754,745
| New | +$9.92M |
|
|
WCN
1117
CALL
Waste Connections
WCN
$42.6B
| $8.54M | 0.01% |
48,700
+42,300
| +661% | +$7.07M |
|
|
MRO
1118
CALL
DELISTED
Marathon Oil Corporation
MRO
| $8.54M | 0.01% |
297,900
-247,300
| -45% | -$6.86M |
|
1119
CALL
CDW
CDW
$17.2B
| $8.53M | 0.01% |
38,100
+13,300
| +54% | +$3.08M |
|
|
HCP
1120
CALL
DELISTED
HashiCorp, Inc. Class A Common Stock
HCP
| $8.53M | 0.01% |
253,100
-18,200
| -7% | -$566K |
|
1121
CALL
Dropbox
DBX
$6.86B
| $8.52M | 0.01% |
379,200
+74,200
| +24% | +$1.7M |
|
1122
PUT
L3Harris
LHX
$56.2B
| $8.51M | 0.01% |
37,900
-5,100
| -12% | -$1.1M |
|
1123
CALL
GlobalFoundries
GFS
$30B
| $8.5M | 0.01% |
168,100
+46,300
| +38% | +$2.32M |
|
|
1124
CALL
L3Harris
LHX
$56.2B
| $8.49M | 0.01% |
37,800
-15,000
| -28% | -$3.24M |
|
1125
PUT
Paycom
PAYC
$6.79B
| $8.48M | 0.01% |
59,300
-1,400
| -2% | -$240K |
|
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.