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 | |
|---|---|---|---|---|---|---|
4376
CALL
Enpro
NPO
$6.43B
| $262K | ﹤0.01% |
1,800
+1,200
| +200% | +$182K |
|
|
CHGX
4377
PUT
DELISTED
AXS Change Finance ESG ETF
CHGX
| $262K | ﹤0.01% |
7,600
-92,800
| -92% | -$3.29M |
|
4378
JELD-WEN Holding
JELD
$109M
| $261K | ﹤0.01% |
19,388
-998
| -5% | -$16.7K |
|
4379
LegalZoom.com
LZ
$1.45B
| $261K | ﹤0.01% |
+31,175
| New | +$321K |
|
4380
CALL
Real Brokerage
REAX
$371M
| $261K | ﹤0.01% |
64,300
-3,100
| -5% | -$13K |
|
|
RVNC
4381
CALL
DELISTED
Revance Therapeutics, Inc.
RVNC
| $261K | ﹤0.01% |
101,900
-84,400
| -45% | -$288K |
|
4382
Direxion Daily AAPL Bull 2X ETF
AAPU
$201M
| $260K | ﹤0.01% |
7,994
+7,443
| +1,351% | +$196K |
|
4383
PUT
CorMedix
CRMD
$571M
| $260K | ﹤0.01% |
60,200
-25,800
| -30% | -$131K |
|
|
MRSN
4384
PUT
DELISTED
Mersana Therapeutics
MRSN
| $260K | ﹤0.01% |
+5,184
| New | +$375K |
|
4385
CALL
Global X MSCI Norway ETF
NORW
$86.7M
| $260K | ﹤0.01% |
8,700
+6,800
| +358% | +$175K |
|
4386
CALL
Pacira BioSciences
PCRX
$1.03B
| $260K | ﹤0.01% |
9,100
+7,200
| +379% | +$205K |
|
|
AMWD
4387
CALL
DELISTED
American Woodmark
AMWD
| $259K | ﹤0.01% |
3,300
-2,700
| -45% | -$244K |
|
4388
CALL
Church & Dwight Co
CHD
$23.6B
| $259K | ﹤0.01% |
2,500
-13,300
| -84% | -$1.41M |
|
4389
Genpact
G
$6.24B
| $259K | ﹤0.01% |
+8,066
| New | +$260K |
|
4390
PUT
MacroGenics
MGNX
$240M
| $259K | ﹤0.01% |
61,100
+54,200
| +786% | +$528K |
|
4391
MaxLinear
MXL
$5.44B
| $259K | ﹤0.01% |
12,886
+4,119
| +47% | +$81K |
|
4392
ProShares UltraPro S&P 500
UPRO
$5.16B
| $259K | ﹤0.01% |
+3,383
| New | +$235K |
|
4393
PUT
Flywire
FLYW
$2.08B
| $258K | ﹤0.01% |
15,800
+8,700
| +123% | +$164K |
|
4394
CALL
Hilton Grand Vacations
HGV
$4.12B
| $258K | ﹤0.01% |
+6,400
| New | +$272K |
|
4395
CALL
LCI Industries
LCII
$2.6B
| $258K | ﹤0.01% |
2,500
-600
| -19% | -$64.8K |
|
4396
CALL
SunCoke Energy
SXC
$798M
| $258K | ﹤0.01% |
26,400
+25,200
| +2,100% | +$260K |
|
4397
CALL
Brady Corp
BRC
$4.53B
| $257K | ﹤0.01% |
3,900
+2,400
| +160% | +$150K |
|
|
INFN
4398
PUT
DELISTED
Infinera Corporation Common Stock
INFN
| $257K | ﹤0.01% |
42,300
+12,600
| +42% | +$66.7K |
|
|
ABK
4399
PUT
DELISTED
Ambac Financial Group
ABK
| $257K | ﹤0.01% |
20,100
+7,100
| +55% | +$90.8K |
|
4400
CALL
Broadridge
BR
$18.5B
| $256K | ﹤0.01% |
1,300
-7,100
| -85% | -$1.41M |
|
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.