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 | |
|---|---|---|---|---|---|---|
7226
CALL
Cars.com
CARS
$705M
| $13K | ﹤0.01% |
700
-3,600
| -84% | -$65.7K |
|
7227
Clear Channel Outdoor Holdings
CCO
$1.23B
| $13K | ﹤0.01% |
+9,796
| New | +$14.4K |
|
7228
PUT
Churchill Downs
CHDN
$6.22B
| $13K | ﹤0.01% |
100
| – | – |
|
7229
PUT
Grupo Cibest SA
CIB
$21.1B
| $13K | ﹤0.01% |
400
-2,600
| -87% | -$89.2K |
|
7230
Conduent
CNDT
$251M
| $13K | ﹤0.01% |
+4,159
| New | +$14.1K |
|
7231
PC Connection
CNXN
$2.1B
| $13K | ﹤0.01% |
205
-926
| -82% | -$60K |
|
7232
Carter's
CRI
$1.45B
| $13K | ﹤0.01% |
+212
| New | +$14.7K |
|
7233
PUT
Cousins Properties
CUZ
$5.22B
| $13K | ﹤0.01% |
+600
| New | +$13.8K |
|
7234
CALL
DocGo
DCGO
$62.4M
| $13K | ﹤0.01% |
4,500
-58,800
| -93% | -$194K |
|
7235
Flux Power
FLUX
$12.1M
| $13K | ﹤0.01% |
4,415
-21,575
| -83% | -$82.2K |
|
7236
PUT
FNB Corp
FNB
$6.81B
| $13K | ﹤0.01% |
1,000
+500
| +100% | +$6.74K |
|
7237
Fortis
FTS
$29.7B
| $13K | ﹤0.01% |
+339
| New | +$13.4K |
|
7238
CALL
Greenlight Captial
GLRE
$586M
| $13K | ﹤0.01% |
1,000
-2,600
| -72% | -$33.1K |
|
|
MCHB
7239
PUT
Mechanics Bancorp
MCHB
$3.51B
| $13K | ﹤0.01% |
+1,200
| New | +$13.2K |
|
7240
CALL
Columbia India Consumer ETF
INCO
$233M
| $13K | ﹤0.01% |
+200
| New | +$13.3K |
|
7241
IRIDEX
IRIX
$15.3M
| $13K | ﹤0.01% |
6,405
-338
| -5% | -$905 |
|
7242
CALL
Lakeland Industries
LAKE
$106M
| $13K | ﹤0.01% |
600
-300
| -33% | -$5.64K |
|
7243
PUT
LXP Industrial Trust
LXP
$3.53B
| $13K | ﹤0.01% |
300
| – | – |
|
7244
PUT
Pediatrix Medical
MD
$2.21B
| $13K | ﹤0.01% |
1,800
+1,100
| +157% | +$9.1K |
|
7245
MoneyHero
MNY
$43.1M
| $13K | ﹤0.01% |
7,307
+4,240
| +138% | +$8.79K |
|
7246
PUT
Mercury Systems
MRCY
$5.97B
| $13K | ﹤0.01% |
500
-1,300
| -72% | -$37.9K |
|
|
MTA
7247
PUT
Metalla Royalty & Streaming
MTA
$688M
| $13K | ﹤0.01% |
4,800
-32,900
| -87% | -$101K |
|
7248
Mueller Water Products
MWA
$4.05B
| $13K | ﹤0.01% |
+731
| New | +$12.6K |
|
7249
PUT
National Health Investors
NHI
$3.81B
| $13K | ﹤0.01% |
200
+100
| +100% | +$6.41K |
|
7250
CALL
OP Bancorp
OPBK
$241M
| $13K | ﹤0.01% |
1,400
| – | – |
|
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.