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 | |
|---|---|---|---|---|---|---|
4251
MGM Resorts International
MGM
$11.7B
| $294K | ﹤0.01% |
+6,617
| New | +$277K |
|
4252
Raymond James Financial
RJF
$33.4B
| $294K | ﹤0.01% |
+2,380
| New | +$294K |
|
|
UCTT
4253
CALL
Ultra Clean Holdings
UCTT
$3.15B
| $294K | ﹤0.01% |
6,000
+2,700
| +82% | +$121K |
|
4254
Energy Fuels
UUUU
$2.68B
| $294K | ﹤0.01% |
48,662
-527
| -1% | -$3.22K |
|
|
BPMC
4255
DELISTED
Blueprint Medicines
BPMC
| $293K | ﹤0.01% |
2,724
+9
| +0.3% | +$901 |
|
4256
PUT
Leggett & Platt
LEG
$1.4B
| $293K | ﹤0.01% |
25,600
-98,400
| -79% | -$1.39M |
|
|
XELA
4257
CALL
DELISTED
Exela Technologies, Inc. Common Stock
XELA
| $293K | ﹤0.01% |
120,700
+300
| +0.2% | +$719 |
|
4258
CALL
Booz Allen Hamilton
BAH
$8.42B
| $292K | ﹤0.01% |
1,900
-9,500
| -83% | -$1.42M |
|
4259
PUT
Bloomin' Brands
BLMN
$744M
| $292K | ﹤0.01% |
15,200
-30,300
| -67% | -$710K |
|
4260
CALL
Celldex Therapeutics
CLDX
$2.93B
| $292K | ﹤0.01% |
7,900
+1,000
| +14% | +$37.7K |
|
4261
CALL
Vita Coco
COCO
$3.9B
| $292K | ﹤0.01% |
10,500
-5,600
| -35% | -$149K |
|
4262
PUT
Editas Medicine
EDIT
$396M
| $292K | ﹤0.01% |
62,600
+18,300
| +41% | +$103K |
|
4263
PUT
Hallador Energy
HNRG
$645M
| $292K | ﹤0.01% |
37,700
+37,200
| +7,440% | +$233K |
|
4264
PUT
Aurora
AUR
$11.7B
| $291K | ﹤0.01% |
105,200
+72,100
| +218% | +$199K |
|
4265
Avery Dennison
AVY
$12.8B
| $291K | ﹤0.01% |
1,333
-3,474
| -72% | -$771K |
|
4266
CALL
GATX Corp
GATX
$6.43B
| $291K | ﹤0.01% |
2,200
| – | – |
|
4267
PUT
Marten Transport
MRTN
$1.23B
| $291K | ﹤0.01% |
+15,800
| New | +$277K |
|
4268
Outset Medical
OM
$85.1M
| $291K | ﹤0.01% |
5,051
+2,364
| +88% | +$116K |
|
4269
CALL
Woodside Energy
WDS
$44.2B
| $291K | ﹤0.01% |
15,500
-300
| -2% | -$5.58K |
|
4270
PUT
Warner Music
WMG
$15.3B
| $291K | ﹤0.01% |
9,500
-2,100
| -18% | -$67.4K |
|
|
BIG
4271
DELISTED
Big Lots, Inc.
BIG
| $291K | ﹤0.01% |
+168,277
| New | +$543K |
|
|
MOR
4272
CALL
DELISTED
MorphoSys AG American Depositary Shares
MOR
| $291K | ﹤0.01% |
16,000
-21,000
| -57% | -$382K |
|
4273
Beam Therapeutics
BEAM
$2.69B
| $290K | ﹤0.01% |
+12,417
| New | +$305K |
|
4274
CALL
Evolent Health
EVH
$372M
| $290K | ﹤0.01% |
15,200
-29,900
| -66% | -$764K |
|
4275
Warrior Met Coal
HCC
$4.16B
| $290K | ﹤0.01% |
4,624
-5,039
| -52% | -$326K |
|
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.