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 | |
|---|---|---|---|---|---|---|
6026
Compass Diversified
CODI
$756M
| $53K | ﹤0.01% |
2,457
+2,330
| +1,835% | +$52.4K |
|
6027
Genco Shipping & Trading
GNK
$1.13B
| $53K | ﹤0.01% |
2,515
-11,011
| -81% | -$237K |
|
|
HEES
6028
DELISTED
H&E Equipment Services
HEES
| $53K | ﹤0.01% |
+1,202
| New | +$61.6K |
|
6029
Henry Schein
HSIC
$9.7B
| $53K | ﹤0.01% |
+833
| New | +$58.6K |
|
|
IMMP
6030
PUT
Immutep
IMMP
$56M
| $53K | ﹤0.01% |
26,400
+20,600
| +355% | +$55.3K |
|
6031
iShares Russell 1000 ETF
IWB
$47.9B
| $53K | ﹤0.01% |
+181
| New | +$52K |
|
6032
CALL
QuinStreet
QNST
$890M
| $53K | ﹤0.01% |
3,200
-84,200
| -96% | -$1.46M |
|
6033
PUT
Ribbon Communications
RBBN
$373M
| $53K | ﹤0.01% |
16,300
+100
| +0.6% | +$304 |
|
6034
PUT
VirTra
VTSI
$35.7M
| $53K | ﹤0.01% |
7,000
-800
| -10% | -$9.2K |
|
6035
PUT
Corpay
CPAY
$25.5B
| $53K | ﹤0.01% |
200
-34,600
| -99% | -$9.79M |
|
|
APLT
6036
PUT
DELISTED
Applied Therapeutics
APLT
| $52K | ﹤0.01% |
11,300
-7,200
| -39% | -$34.1K |
|
|
ATXS
6037
DELISTED
Astria Therapeutics
ATXS
| $52K | ﹤0.01% |
5,780
-90,901
| -94% | -$887K |
|
6038
PUT
Brookfield Renewable
BEP
$9.9B
| $52K | ﹤0.01% |
2,100
-7,900
| -79% | -$197K |
|
|
CMRC
6039
PUT
Commerce.com Inc Series 1
CMRC
$261M
| $52K | ﹤0.01% |
6,500
+5,400
| +491% | +$38.6K |
|
6040
CAE Inc. Common Shares
CAE
$8.31B
| $52K | ﹤0.01% |
2,826
+1,394
| +97% | +$27K |
|
6041
CALL
Embecta
EMBC
$217M
| $52K | ﹤0.01% |
4,200
+3,400
| +425% | +$41.3K |
|
6042
CALL
Fidus Investment
FDUS
$755M
| $52K | ﹤0.01% |
2,700
+1,700
| +170% | +$33.8K |
|
|
FFWM
6043
CALL
DELISTED
First Foundation Inc
FFWM
| $52K | ﹤0.01% |
8,000
+7,400
| +1,233% | +$45.3K |
|
|
HDSN
6044
Hudson Technologies
HDSN
$244M
| $52K | ﹤0.01% |
5,928
-14,647
| -71% | -$142K |
|
|
INN
6045
Summit Hotel Properties
INN
$748M
| $52K | ﹤0.01% |
+8,810
| New | +$53.9K |
|
6046
CALL
LSB Industries
LXU
$794M
| $52K | ﹤0.01% |
6,400
+2,600
| +68% | +$22.7K |
|
6047
CALL
NovaGold Resources
NG
$2.66B
| $52K | ﹤0.01% |
15,200
+13,000
| +591% | +$43.1K |
|
6048
CALL
PROG Holdings
PRG
$1.71B
| $52K | ﹤0.01% |
1,500
-28,500
| -95% | -$986K |
|
6049
PUT
ProShares UltraShort Industrials
SIJ
$5.97M
| $52K | ﹤0.01% |
175
+100
| +133% | +$3.93K |
|
6050
CALL
Stratasys
SSYS
$697M
| $52K | ﹤0.01% |
6,300
+4,000
| +174% | +$38K |
|
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.