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 | |
|---|---|---|---|---|---|---|
5051
CALL
Anterix
ATEX
$1.82B
| $134K | ﹤0.01% |
3,400
+2,900
| +580% | +$93.8K |
|
5052
CALL
DT Midstream
DTM
$14B
| $134K | ﹤0.01% |
1,900
+1,100
| +138% | +$72.2K |
|
5053
PUT
OptimizeRx
OPRX
$118M
| $134K | ﹤0.01% |
+13,400
| New | +$147K |
|
5054
Polestar Automotive Holding UK
PSNY
$2.05B
| $134K | ﹤0.01% |
+5,702
| New | +$190K |
|
5055
Pyxis Oncology
PYXS
$182M
| $134K | ﹤0.01% |
+40,756
| New | +$171K |
|
5056
D-Wave Quantum Inc. Common Stock
QBTS
$6.66B
| $134K | ﹤0.01% |
117,655
+69,810
| +146% | +$98.4K |
|
|
VERV
5057
DELISTED
Verve Therapeutics
VERV
| $134K | ﹤0.01% |
27,471
+18,256
| +198% | +$115K |
|
5058
PUT
Ametek
AME
$55B
| $133K | ﹤0.01% |
800
-2,600
| -76% | -$449K |
|
5059
PUT
Dave Inc
DAVE
$4.8B
| $133K | ﹤0.01% |
4,400
+3,800
| +633% | +$154K |
|
5060
iPath Bloomberg Commodity Index Total Return ETN due 12 June 2036
DJP
$800M
| $133K | ﹤0.01% |
4,154
-699
| -14% | -$22.8K |
|
|
DNB
5061
CALL
DELISTED
Dun & Bradstreet
DNB
| $133K | ﹤0.01% |
14,400
+4,700
| +48% | +$45.2K |
|
5062
PUT
Gray Television
GTN
$417M
| $133K | ﹤0.01% |
25,600
+25,300
| +8,433% | +$148K |
|
5063
CALL
Malibu Boats
MBUU
$550M
| $133K | ﹤0.01% |
3,800
+1,100
| +41% | +$40.2K |
|
5064
CALL
Madison Square Garden
MSGE
$3.73B
| $133K | ﹤0.01% |
3,900
-52,500
| -93% | -$1.94M |
|
5065
CALL
Olema Pharmaceuticals
OLMA
$1.03B
| $133K | ﹤0.01% |
12,300
+9,400
| +324% | +$102K |
|
5066
Rackspace Technology
RXT
$1.07B
| $133K | ﹤0.01% |
44,930
+29,865
| +198% | +$59.9K |
|
|
WSR
5067
PUT
DELISTED
Whitestone REIT
WSR
| $133K | ﹤0.01% |
10,000
+7,300
| +270% | +$89.7K |
|
5068
PUT
Arcos Dorados Holdings
ARCO
$1.73B
| $132K | ﹤0.01% |
14,700
-19,200
| -57% | -$198K |
|
5069
AvePoint
AVPT
$2.72B
| $132K | ﹤0.01% |
12,688
-39,782
| -76% | -$345K |
|
|
DEA
5070
PUT
Easterly Government Properties
DEA
$1.15B
| $132K | ﹤0.01% |
4,280
+2,760
| +182% | +$81.6K |
|
|
ELME
5071
PUT
Elme Communities
ELME
$144M
| $132K | ﹤0.01% |
+8,300
| New | +$126K |
|
5072
PUT
Edgewell Personal Care
EPC
$1.26B
| $132K | ﹤0.01% |
3,300
-500
| -13% | -$19.2K |
|
5073
PUT
ESAB
ESAB
$5.32B
| $132K | ﹤0.01% |
1,400
+800
| +133% | +$83.1K |
|
5074
PUT
Grocery Outlet
GO
$906M
| $132K | ﹤0.01% |
6,000
+4,700
| +362% | +$111K |
|
5075
PUT
GeoPark
GPRK
$622M
| $132K | ﹤0.01% |
12,100
+5,700
| +89% | +$57.1K |
|
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.