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 | |
|---|---|---|---|---|---|---|
3101
CALL
Weyerhaeuser
WY
$17.2B
| $843K | ﹤0.01% |
29,700
-75,500
| -72% | -$2.34M |
|
3102
CALL
Option Care Health
OPCH
$3.42B
| $842K | ﹤0.01% |
30,400
-11,200
| -27% | -$334K |
|
3103
CALL
Marqeta
MQ
$1.85B
| $841K | ﹤0.01% |
38,400
-45,525
| -54% | -$1M |
|
3104
CALL
Cintas
CTAS
$84.4B
| $840K | ﹤0.01% |
4,800
-49,600
| -91% | -$8.47M |
|
3105
PUT
Aehr Test Systems
AEHR
$2.52B
| $839K | ﹤0.01% |
75,200
-74,500
| -50% | -$868K |
|
3106
PUT
Synaptics
SYNA
$4.55B
| $837K | ﹤0.01% |
9,500
-12,800
| -57% | -$1.16M |
|
|
SKX
3107
DELISTED
Skechers
SKX
| $836K | ﹤0.01% |
12,096
+1,717
| +17% | +$114K |
|
3108
PUT
ALPS REIT Dividend Dogs ETF
RDOG
$11.6M
| $833K | ﹤0.01% |
19,200
+4,200
| +28% | +$152K |
|
3109
PUT
Terex
TEX
$7.89B
| $833K | ﹤0.01% |
15,200
+6,100
| +67% | +$362K |
|
3110
PUT
Eastman Chemical
EMN
$7.74B
| $832K | ﹤0.01% |
8,500
+2,400
| +39% | +$238K |
|
3111
CALL
NeoGenomics
NEO
$1.71B
| $829K | ﹤0.01% |
59,800
-39,800
| -40% | -$564K |
|
3112
CALL
Vitesse Energy
VTS
$636M
| $829K | ﹤0.01% |
35,000
+28,600
| +447% | +$680K |
|
3113
Live Nation Entertainment
LYV
$41.7B
| $827K | ﹤0.01% |
+8,826
| New | +$834K |
|
3114
Pultegroup
PHM
$24.9B
| $827K | ﹤0.01% |
7,518
+4,759
| +172% | +$540K |
|
|
AXNX
3115
CALL
DELISTED
Axonics, Inc. Common Stock
AXNX
| $826K | ﹤0.01% |
12,300
-300
| -2% | -$20.2K |
|
3116
PUT
Uranium Energy
UEC
$4.9B
| $825K | ﹤0.01% |
137,400
-24,900
| -15% | -$169K |
|
3117
PUT
Amkor Technology
AMKR
$15B
| $824K | ﹤0.01% |
20,600
+12,700
| +161% | +$421K |
|
3118
Omega Healthcare
OHI
$15.3B
| $824K | ﹤0.01% |
+24,085
| New | +$759K |
|
3119
PUT
RB Global
RBA
$21.7B
| $824K | ﹤0.01% |
10,800
+1,800
| +20% | +$135K |
|
3120
PUT
Rogers Communications
RCI
$17.7B
| $824K | ﹤0.01% |
22,300
+21,500
| +2,688% | +$834K |
|
3121
CALL
Principal Financial Group
PFG
$24B
| $823K | ﹤0.01% |
10,500
+4,900
| +88% | +$398K |
|
|
LAZR
3122
PUT
DELISTED
Luminar Technologies
LAZR
| $822K | ﹤0.01% |
36,800
+18,053
| +96% | +$428K |
|
3123
CALL
UWM Holdings
UWMC
$624M
| $820K | ﹤0.01% |
118,400
-34,600
| -23% | -$238K |
|
3124
PUT
Open Text
OTEX
$5.73B
| $817K | ﹤0.01% |
27,200
+25,200
| +1,260% | +$808K |
|
3125
PUT
Birkenstock
BIRK
$7.64B
| $816K | ﹤0.01% |
15,000
-10,700
| -42% | -$530K |
|
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.