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 | |
|---|---|---|---|---|---|---|
8226
CALL
Cerus
CERS
$587M
| $2K | ﹤0.01% |
1,200
-800
| -40% | -$1.43K |
|
8227
CALL
CEMIG Preferred Shares
CIG
$6.09B
| $2K | ﹤0.01% |
1,690
-1,170
| -41% | -$2.24K |
|
8228
CI&T Inc
CINT
$400M
| $2K | ﹤0.01% |
570
-7,217
| -93% | -$30.9K |
|
|
CLPR
8229
Clipper Realty
CLPR
$46.5M
| $2K | ﹤0.01% |
681
+645
| +1,792% | +$2.58K |
|
8230
CALL
Cellectar Biosciences
CLRB
$19.3M
| $2K | ﹤0.01% |
33
+6
| +22% | +$576 |
|
8231
Clearwater Paper
CLW
$271M
| $2K | ﹤0.01% |
+59
| New | +$2.77K |
|
8232
CALL
Caledonia Mining Corp
CMCL
$360M
| $2K | ﹤0.01% |
300
-8,900
| -97% | -$91.7K |
|
8233
Columbus McKinnon
CMCO
$465M
| $2K | ﹤0.01% |
+85
| New | +$3.45K |
|
8234
PUT
Compass Minerals
CMP
$1.24B
| $2K | ﹤0.01% |
200
-4,000
| -95% | -$51.6K |
|
8235
Americold
COLD
$4.09B
| $2K | ﹤0.01% |
106
-669
| -86% | -$16.4K |
|
8236
Cosmos Holdings
COSM
$12.4M
| $2K | ﹤0.01% |
1,986
-1,359
| -41% | -$915 |
|
8237
Community Trust Bancorp
CTBI
$1.38B
| $2K | ﹤0.01% |
68
-282
| -81% | -$11.9K |
|
8238
Custom Truck One Source
CTOS
$2.47B
| $2K | ﹤0.01% |
+635
| New | +$3.09K |
|
8239
CALL
CareTrust REIT
CTRE
$10.2B
| $2K | ﹤0.01% |
100
-700
| -88% | -$17.3K |
|
|
8240
CareTrust REIT
CTRE
$10.2B
| $2K | ﹤0.01% |
83
-1,500
| -95% | -$37.1K |
|
8241
PUT
Cue Biopharma
CUE
$135M
| $2K | ﹤0.01% |
67
-143
| -68% | -$7.07K |
|
8242
CALL
Civeo
CVEO
$379M
| $2K | ﹤0.01% |
+100
| New | +$2.49K |
|
8243
CALL
Dimensional US Core Equity Market ETF
DFAU
$12.3B
| $2K | ﹤0.01% |
+100
| New | +$3.63K |
|
8244
Global X Dow 30 Covered Call ETF
DJIA
$182M
| $2K | ﹤0.01% |
+98
| New | +$2.18K |
|
8245
DLH Holdings
DLHC
$73.8M
| $2K | ﹤0.01% |
260
-298
| -53% | -$3.36K |
|
8246
DarioHealth
DRIO
$57M
| $2K | ﹤0.01% |
97
-162
| -63% | -$4.59K |
|
8247
PUT
Driven Brands
DRVN
$2.25B
| $2K | ﹤0.01% |
200
-200
| -50% | -$2.53K |
|
|
EATZ
8248
DELISTED
AdvisorShares Restaurant ETF
EATZ
| $2K | ﹤0.01% |
84
+69
| +460% | +$1.65K |
|
8249
Enliven Therapeutics
ELVN
$3.78B
| $2K | ﹤0.01% |
+93
| New | +$1.96K |
|
8250
CALL
Enlivex Ltd
ENLV
$70.7M
| $2K | ﹤0.01% |
107
-533
| -83% | -$14.2K |
|
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.