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 | |
|---|---|---|---|---|---|---|
126
CALL
Cisco
CSCO
$442B
| $119M | 0.07% |
2,497,100
-237,700
| -9% | -$11.3M |
|
127
CALL
Freeport-McMoran
FCX
$89.9B
| $118M | 0.07% |
2,426,200
-207,700
| -8% | -$10.5M |
|
128
CALL
Occidental Petroleum
OXY
$56.2B
| $118M | 0.07% |
1,867,400
-143,300
| -7% | -$9.19M |
|
129
PUT
Oracle
ORCL
$366B
| $117M | 0.07% |
831,700
-91,900
| -10% | -$11.4M |
|
130
CALL
Texas Instruments
TXN
$265B
| $115M | 0.07% |
591,800
+22,900
| +4% | +$4.23M |
|
131
PUT
Snowflake
SNOW
$94.2B
| $115M | 0.07% |
850,900
+91,500
| +12% | +$13.5M |
|
132
CALL
General Motors
GM
$71.7B
| $114M | 0.07% |
2,461,900
-612,200
| -20% | -$27.6M |
|
133
PUT
Home Depot
HD
$331B
| $114M | 0.07% |
331,700
+134,700
| +68% | +$45.9M |
|
|
XYZ
134
CALL
Block Inc
XYZ
$47.8B
| $113M | 0.07% |
1,748,300
+81,400
| +5% | +$5.69M |
|
135
CALL
RTX Corp
RTX
$261B
| $112M | 0.07% |
1,116,500
+258,100
| +30% | +$26.7M |
|
136
CALL
FedEx
FDX
$73.1B
| $112M | 0.07% |
372,400
-124,900
| -25% | -$32.7M |
|
137
CALL
iShares Morningstar Value ETF
ILCV
$1.3B
| $112M | 0.07% |
1,572,200
+290,300
| +23% | +$21.9M |
|
138
PUT
Palantir
PLTR
$318B
| $112M | 0.07% |
4,404,200
-1,240,500
| -22% | -$27.9M |
|
139
CALL
Marvell Technology
MRVL
$187B
| $111M | 0.07% |
1,592,200
-320,900
| -17% | -$22.5M |
|
140
CALL
Shopify
SHOP
$160B
| $110M | 0.07% |
1,672,700
-233,800
| -12% | -$15.5M |
|
141
PUT
Mastercard
MA
$476B
| $110M | 0.07% |
249,200
-38,700
| -13% | -$17.6M |
|
142
CALL
IBM
IBM
$198B
| $110M | 0.07% |
633,400
-445,000
| -41% | -$77.3M |
|
143
PUT
Direxion Daily Technology Bull 3x ETF
TECL
$5.6B
| $109M | 0.07% |
1,924,300
-288,700
| -13% | -$23.3M |
|
144
PUT
Airbnb
ABNB
$86B
| $107M | 0.07% |
705,300
-267,100
| -27% | -$40.8M |
|
145
CALL
First Solar
FSLR
$22.1B
| $107M | 0.07% |
472,900
+85,900
| +22% | +$18.7M |
|
|
146
PUT
Marvell Technology
MRVL
$187B
| $106M | 0.07% |
1,521,900
+109,000
| +8% | +$7.64M |
|
147
PUT
Blackstone
BX
$152B
| $106M | 0.07% |
858,400
+280,600
| +49% | +$34.5M |
|
|
NVO
148
CALL
Novo Nordisk
NVO
$218B
| $105M | 0.06% |
732,700
-103,900
| -12% | -$13.8M |
|
149
CALL
Booking.com
BKNG
$139B
| $105M | 0.06% |
660,000
-175,000
| -21% | -$25.9M |
|
150
PUT
ExxonMobil
XOM
$629B
| $104M | 0.06% |
1,185,000
-964,000
| -45% | -$112M |
|
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.