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 | |
|---|---|---|---|---|---|---|
6251
PUT
OPAL Fuels
OPAL
$67.4M
| $42K | ﹤0.01% |
10,300
+300
| +3% | +$1.41K |
|
6252
Simplify Interest Rate Hedge ETF
PFIX
$177M
| $42K | ﹤0.01% |
+880
| New | +$43.2K |
|
6253
PUT
Spok Holdings
SPOK
$225M
| $42K | ﹤0.01% |
2,900
-2,400
| -45% | -$36.2K |
|
|
UDMY
6254
PUT
DELISTED
Udemy
UDMY
| $42K | ﹤0.01% |
4,900
-1,700
| -26% | -$16.1K |
|
6255
PUT
UNIFI
UFI
$114M
| $42K | ﹤0.01% |
7,300
+7,100
| +3,550% | +$42.3K |
|
6256
Visteon
VC
$2.8B
| $42K | ﹤0.01% |
+395
| New | +$43.6K |
|
6257
Vitesse Energy
VTS
$636M
| $42K | ﹤0.01% |
1,811
-189
| -9% | -$4.49K |
|
6258
Vanguard Russell 2000 ETF
VTWO
$17.4B
| $42K | ﹤0.01% |
+522
| New | +$42.7K |
|
6259
XPEL
XPEL
$1.22B
| $42K | ﹤0.01% |
1,192
-6,847
| -85% | -$295K |
|
|
MRX
6260
CALL
Marex Group Limited Ordinary Shares
MRX
$4.74B
| $42K | ﹤0.01% |
+2,100
| New | +$41.3K |
|
|
RCM
6261
DELISTED
R1 RCM Inc. Common Stock
RCM
| $42K | ﹤0.01% |
3,423
-32,404
| -90% | -$403K |
|
6262
PUT
Arcosa
ACA
$7.13B
| $41K | ﹤0.01% |
500
+300
| +150% | +$25K |
|
6263
CALL
Amylyx Pharmaceuticals
AMLX
$2.31B
| $41K | ﹤0.01% |
21,600
-358,700
| -94% | -$695K |
|
6264
PUT
Aquestive Therapeutics
AQST
$467M
| $41K | ﹤0.01% |
15,800
+6,500
| +70% | +$21.7K |
|
6265
BioXcel Therapeutics
BTAI
$24.5M
| $41K | ﹤0.01% |
2,018
+1,123
| +125% | +$37.6K |
|
6266
PUT
Celularity
CELU
$19.7M
| $41K | ﹤0.01% |
+13,100
| New | +$45.5K |
|
6267
Equity Lifestyle Properties
ELS
$12.7B
| $41K | ﹤0.01% |
+639
| New | +$40.1K |
|
6268
PUT
Fidelity Enhanced Large Cap Core ETF
FELC
$7.92B
| $41K | ﹤0.01% |
1,200
+600
| +100% | +$17.6K |
|
6269
Immunic
IMUX
$191M
| $41K | ﹤0.01% |
3,719
+743
| +25% | +$9.23K |
|
6270
Lithia Motors
LAD
$9.24B
| $41K | ﹤0.01% |
+166
| New | +$43.5K |
|
6271
PUT
Loop Industries
LOOP
$35.3M
| $41K | ﹤0.01% |
20,000
-100
| -0.5% | -$266 |
|
6272
PUT
La-Z-Boy
LZB
$1.61B
| $41K | ﹤0.01% |
1,100
+800
| +267% | +$28.2K |
|
6273
CALL
MarketWise
MKTW
$53.1M
| $41K | ﹤0.01% |
1,795
+60
| +3% | +$1.77K |
|
6274
Oil States International
OIS
$456M
| $41K | ﹤0.01% |
9,375
-6,500
| -41% | -$31.2K |
|
|
OPI
6275
CALL
DELISTED
Office Properties Income Trust
OPI
| $41K | ﹤0.01% |
20,400
+12,200
| +149% | +$26.5K |
|
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.