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 | |
|---|---|---|---|---|---|---|
|
LAR
4351
CALL
Lithium Argentina AG
LAR
$929M
| $268K | ﹤0.01% |
83,800
-4,700
| -5% | -$22.1K |
|
|
AMPS
4352
CALL
DELISTED
Altus Power
AMPS
| $268K | ﹤0.01% |
68,500
+44,900
| +190% | +$187K |
|
4353
PUT
Blink Charging
BLNK
$68.9M
| $267K | ﹤0.01% |
97,700
-125,200
| -56% | -$357K |
|
4354
Dyne Therapeutics
DYN
$4.23B
| $267K | ﹤0.01% |
7,583
-42,123
| -85% | -$1.22M |
|
4355
PUT
Emergent Biosolutions
EBS
$383M
| $267K | ﹤0.01% |
39,200
+5,100
| +15% | +$21.9K |
|
|
TDAY
4356
PUT
USA Today Co
TDAY
$1.32B
| $267K | ﹤0.01% |
58,000
+56,000
| +2,800% | +$187K |
|
4357
Full Truck Alliance
YMM
$10.1B
| $267K | ﹤0.01% |
+33,214
| New | +$282K |
|
|
DCH
4358
PUT
Dauch Corp
DCH
$1.35B
| $266K | ﹤0.01% |
38,100
+23,700
| +165% | +$175K |
|
|
CIM
4359
CALL
Chimera Investment
CIM
$1.07B
| $266K | ﹤0.01% |
20,800
+17,533
| +537% | +$222K |
|
4360
CALL
Driven Brands
DRVN
$2.49B
| $266K | ﹤0.01% |
20,900
+9,800
| +88% | +$124K |
|
4361
Destination XL Group
DXLG
$33.2M
| $266K | ﹤0.01% |
73,207
+72,873
| +21,818% | +$251K |
|
|
HAPN
4362
PUT
Happen Inc
HAPN
$2.17B
| $266K | ﹤0.01% |
31,500
+12,700
| +68% | +$109K |
|
4363
Becton Dickinson
BDX
$46.4B
| $265K | ﹤0.01% |
+1,137
| New | +$268K |
|
4364
PUT
GoodRx Holdings
GDRX
$1.12B
| $265K | ﹤0.01% |
34,100
-300
| -0.9% | -$2.22K |
|
4365
Upwork
UPWK
$1.19B
| $265K | ﹤0.01% |
24,692
+13,528
| +121% | +$153K |
|
|
AVDX
4366
CALL
DELISTED
AvidXchange
AVDX
| $264K | ﹤0.01% |
21,900
-43,500
| -67% | -$497K |
|
4367
Glaukos
GKOS
$9.69B
| $264K | ﹤0.01% |
+2,236
| New | +$237K |
|
4368
PUT
Trinity Capital Inc.
TRIN
$1.6B
| $264K | ﹤0.01% |
18,700
+4,700
| +34% | +$69.3K |
|
4369
Ceco Environmental
CECO
$3.62B
| $263K | ﹤0.01% |
9,125
+7,372
| +421% | +$179K |
|
|
ESPR
4370
PUT
DELISTED
Esperion Therapeutics
ESPR
| $263K | ﹤0.01% |
118,500
-14,600
| -11% | -$34.3K |
|
4371
PUT
Federated Hermes
FHI
$4.62B
| $263K | ﹤0.01% |
+8,000
| New | +$268K |
|
4372
PUT
Kornit Digital
KRNT
$684M
| $263K | ﹤0.01% |
18,000
-118,000
| -87% | -$1.82M |
|
4373
Invesco S&P 500 Top 50 ETF
XLG
$10.5B
| $263K | ﹤0.01% |
5,749
+5,640
| +5,174% | +$242K |
|
4374
CALL
Build-A-Bear
BBW
$449M
| $262K | ﹤0.01% |
10,400
+6,500
| +167% | +$183K |
|
4375
PUT
Gentex
GNTX
$5.15B
| $262K | ﹤0.01% |
7,800
-11,900
| -60% | -$411K |
|
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.