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 | |
|---|---|---|---|---|---|---|
7101
CALL
American Public Education
APEI
$917M
| $15K | ﹤0.01% |
900
-3,700
| -80% | -$58.1K |
|
7102
PUT
Apogee Therapeutics
APGE
$10.1B
| $15K | ﹤0.01% |
+400
| New | +$19.4K |
|
7103
Arena Group
AREN
$50.9M
| $15K | ﹤0.01% |
19,782
+1,414
| +8% | +$1.14K |
|
7104
PUT
Anterix
ATEX
$1.78B
| $15K | ﹤0.01% |
+400
| New | +$12.9K |
|
7105
CALL
AZZ Inc
AZZ
$4.41B
| $15K | ﹤0.01% |
200
-900
| -82% | -$70.4K |
|
7106
PUT
Breakwave Tanker Shipping ETF
BWET
$31M
| $15K | ﹤0.01% |
1,300
-2,500
| -66% | -$45.2K |
|
7107
China Automotive Systems
CAAS
$131M
| $15K | ﹤0.01% |
4,464
+494
| +12% | +$1.82K |
|
7108
PUT
Capricor Therapeutics
CAPR
$380M
| $15K | ﹤0.01% |
3,200
-2,500
| -44% | -$13.9K |
|
|
CGAU
7109
PUT
Centerra Gold
CGAU
$3.19B
| $15K | ﹤0.01% |
2,300
+900
| +64% | +$5.9K |
|
7110
Direxion Daily CSI 300 China A Share Bull 2X ETF
CHAU
$88.1M
| $15K | ﹤0.01% |
+1,204
| New | +$17K |
|
|
CKPT
7111
PUT
DELISTED
Checkpoint Therapeutics
CKPT
| $15K | ﹤0.01% |
7,000
-5,700
| -45% | -$10.1K |
|
7112
CALL
Columbia Sportswear
COLM
$3.3B
| $15K | ﹤0.01% |
200
-200
| -50% | -$16.2K |
|
7113
Champions Oncology
CSBR
$76.8M
| $15K | ﹤0.01% |
3,004
+1,407
| +88% | +$6.86K |
|
7114
PUT
CareTrust REIT
CTRE
$10.1B
| $15K | ﹤0.01% |
600
-14,700
| -96% | -$364K |
|
7115
CEL-SCI Corp
CVM
$21M
| $15K | ﹤0.01% |
457
-588
| -56% | -$25K |
|
|
DADA
7116
DELISTED
Dada Nexus
DADA
| $15K | ﹤0.01% |
12,048
-56,870
| -83% | -$102K |
|
7117
iMGP DBi Managed Futures Strategy ETF
DBMF
$4B
| $15K | ﹤0.01% |
511
+411
| +411% | +$12.1K |
|
7118
Eagle Bancorp
EGBN
$866M
| $15K | ﹤0.01% |
+820
| New | +$16K |
|
7119
Epsilon Energy
EPSN
$165M
| $15K | ﹤0.01% |
2,756
-580
| -17% | -$3.13K |
|
7120
Erasca
ERAS
$6.3B
| $15K | ﹤0.01% |
6,688
+2,056
| +44% | +$4.44K |
|
7121
Energy Recovery
ERII
$433M
| $15K | ﹤0.01% |
1,138
-1,546
| -58% | -$21.3K |
|
7122
PUT
H.B. Fuller
FUL
$3.07B
| $15K | ﹤0.01% |
200
-100
| -33% | -$7.78K |
|
7123
First Watch Restaurant Group
FWRG
$801M
| $15K | ﹤0.01% |
891
-3,092
| -78% | -$64.6K |
|
7124
Gladstone Investment Corp
GAIN
$655M
| $15K | ﹤0.01% |
1,131
-39
| -3% | -$548 |
|
7125
PUT
Graphic Packaging
GPK
$3.45B
| $15K | ﹤0.01% |
600
-2,700
| -82% | -$74.6K |
|
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.