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 | |
|---|---|---|---|---|---|---|
5776
CALL
Descartes Systems
DSGX
$6.44B
| $67K | ﹤0.01% |
+700
| New | +$65.8K |
|
5777
CALL
Enovis
ENOV
$1.68B
| $67K | ﹤0.01% |
1,500
-500
| -25% | -$25.9K |
|
5778
PUT
Flowserve
FLS
$9.71B
| $67K | ﹤0.01% |
1,400
-1,300
| -48% | -$62.2K |
|
5779
CALL
Listed Funds Trust Roundhill Magnificent Seven ETF
MAGS
$3.98B
| $67K | ﹤0.01% |
1,500
+800
| +114% | +$32.7K |
|
5780
PUT
Medallion Financial
MFIN
$229M
| $67K | ﹤0.01% |
8,800
+2,600
| +42% | +$20.6K |
|
|
ACH
5781
Accendra Health
ACH
$237M
| $67K | ﹤0.01% |
+4,991
| New | +$102K |
|
|
PLL
5782
DELISTED
Piedmont Lithium
PLL
| $67K | ﹤0.01% |
6,792
+6,236
| +1,122% | +$79.6K |
|
5783
Rigetti Computing
RGTI
$4.97B
| $67K | ﹤0.01% |
63,200
-32,676
| -34% | -$37.8K |
|
|
JBTM
5784
JBT Marel
JBTM
$7.21B
| $67K | ﹤0.01% |
+706
| New | +$66.6K |
|
5785
Amcor
AMCR
$20.8B
| $66K | ﹤0.01% |
1,368
-164
| -11% | -$7.96K |
|
|
COOP
5786
DELISTED
Mr. Cooper
COOP
| $66K | ﹤0.01% |
+813
| New | +$65.4K |
|
5787
PUT
Torrid Holdings
CURV
$254M
| $66K | ﹤0.01% |
8,900
+800
| +10% | +$4.58K |
|
|
IPG
5788
PUT
DELISTED
Interpublic Group of Companies
IPG
| $66K | ﹤0.01% |
2,300
-67,400
| -97% | -$2.08M |
|
|
LADR
5789
PUT
Ladder Capital
LADR
$1.21B
| $66K | ﹤0.01% |
5,900
+3,700
| +168% | +$40.6K |
|
5790
MBIA
MBI
$261M
| $66K | ﹤0.01% |
12,131
-31,625
| -72% | -$189K |
|
5791
PUT
Neumora Therapeutics
NMRA
$298M
| $66K | ﹤0.01% |
6,800
| – | – |
|
5792
PUT
NET Power
NPWR
$126M
| $66K | ﹤0.01% |
6,800
-400
| -6% | -$4.24K |
|
|
OBE
5793
Obsidian Energy
OBE
$716M
| $66K | ﹤0.01% |
+8,857
| New | +$69.4K |
|
5794
CALL
Praxis Precision Medicines
PRAX
$8.58B
| $66K | ﹤0.01% |
1,600
+100
| +7% | +$4.73K |
|
5795
RELX
RELX
$61.8B
| $66K | ﹤0.01% |
1,451
+1,237
| +578% | +$53.7K |
|
5796
CALL
ReNew
RNW
$2.27B
| $66K | ﹤0.01% |
10,700
-27,300
| -72% | -$164K |
|
5797
CALL
Smart Sand
SND
$185M
| $66K | ﹤0.01% |
31,300
+12,700
| +68% | +$27K |
|
5798
PUT
Worthington Enterprises
WOR
$2.77B
| $66K | ﹤0.01% |
1,400
+800
| +133% | +$45.2K |
|
|
SBT
5799
DELISTED
Sterling Bancorp, Inc. Common Stock
SBT
| $66K | ﹤0.01% |
+12,776
| New | +$62.9K |
|
5800
CALL
Alto Ingredients
ALTO
$369M
| $65K | ﹤0.01% |
45,200
-13,000
| -22% | -$22.5K |
|
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.