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 |
Pfizer
PFE
|
+$89.5M |
| 2 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$85.5M |
| 3 |
Boeing
BA
|
+$71M |
| 4 |
Intel
INTC
|
+$60.7M |
| 5 |
Meta Platforms (Facebook)
META
|
+$48.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$104M |
| 3 |
Alibaba
BABA
|
+$82.8M |
| 4 |
Walt Disney
DIS
|
+$68.5M |
| 5 |
Citigroup
C
|
+$59.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.38% |
| 2 | Healthcare | 0.27% |
| 3 | Consumer Discretionary | 0.25% |
| 4 | Industrials | 0.17% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
5176
PUT
Edgewell Personal Care
EPC
$1.25B
| $146K | ﹤0.01% |
3,800
+3,300
| +660% | +$125K |
|
5177
PUT
Porch Group
PRCH
$1.64B
| $146K | ﹤0.01% |
34,100
+30,700
| +903% | +$91.5K |
|
5178
iShares Mortgage Real Estate ETF
REM
$539M
| $146K | ﹤0.01% |
6,298
-4,820
| -43% | -$109K |
|
5179
Rigetti Computing
RGTI
$4.97B
| $146K | ﹤0.01% |
95,876
+67,041
| +232% | +$96.8K |
|
|
VRNA
5180
CALL
DELISTED
Verona Pharma
VRNA
| $146K | ﹤0.01% |
9,100
-2,200
| -19% | -$38K |
|
5181
CALL
Badger Meter
BMI
$3.89B
| $145K | ﹤0.01% |
900
-200
| -18% | -$30.7K |
|
5182
CALL
Coca-Cola Femsa
KOF
$22.7B
| $145K | ﹤0.01% |
1,500
+1,300
| +650% | +$124K |
|
5183
PUT
National Fuel Gas
NFG
$7.82B
| $145K | ﹤0.01% |
2,700
+2,300
| +575% | +$114K |
|
5184
First Trust NASDAQ Clean Edge Green Energy Index Fund
QCLN
$603M
| $145K | ﹤0.01% |
+4,182
| New | +$148K |
|
5185
PUT
Ryanair
RYAAY
$30.4B
| $145K | ﹤0.01% |
2,500
-2,250
| -47% | -$122K |
|
5186
Standex International
SXI
$3.59B
| $145K | ﹤0.01% |
+797
| New | +$129K |
|
5187
PUT
Autoliv
ALV
$9.02B
| $144K | ﹤0.01% |
1,200
-3,200
| -73% | -$358K |
|
5188
PUT
Apple Hospitality REIT
APLE
$3.9B
| $144K | ﹤0.01% |
8,800
-14,800
| -63% | -$242K |
|
5189
CALL
Clearwater Paper
CLW
$339M
| $144K | ﹤0.01% |
3,300
-6,000
| -65% | -$221K |
|
5190
ProShares Ultra Energy
DIG
$82.8M
| $144K | ﹤0.01% |
+3,153
| New | +$120K |
|
5191
Limbach Holdings
LMB
$855M
| $144K | ﹤0.01% |
+3,485
| New | +$152K |
|
5192
PUT
Omeros
OMER
$857M
| $144K | ﹤0.01% |
42,000
+31,300
| +293% | +$119K |
|
5193
PUT
OneSpan
OSPN
$574M
| $144K | ﹤0.01% |
12,400
+6,000
| +94% | +$61.6K |
|
5194
PUT
Progyny
PGNY
$2.44B
| $144K | ﹤0.01% |
3,800
-8,000
| -68% | -$302K |
|
5195
CALL
SEACOR Marine Holdings
SMHI
$256M
| $144K | ﹤0.01% |
+10,400
| New | +$120K |
|
5196
PUT
Trinity Industries
TRN
$2.49B
| $144K | ﹤0.01% |
5,200
+700
| +16% | +$18K |
|
5197
Vestis
VSTS
$1.91B
| $144K | ﹤0.01% |
7,479
-30,428
| -80% | -$602K |
|
5198
CALL
Global X S&P 500 Tail Risk ETF
XTR
$4.8M
| $144K | ﹤0.01% |
3,300
-500
| -13% | -$14.2K |
|
5199
CALL
Alkermes
ALKS
$8.22B
| $143K | ﹤0.01% |
10,500
-36,200
| -78% | -$1.03M |
|
5200
PUT
Amplitude
AMPL
$1.18B
| $143K | ﹤0.01% |
13,200
+11,600
| +725% | +$142K |
|
Similar funds
Simplex Trading's Q1 2024 Portfolio in Review
As of Q1 2024, Simplex Trading held 10,366 positions worth $173B, up 11% from $156B the previous quarter. Its ten largest holdings account for 47% of the portfolio.
Simplex Trading's Q1 2024 filing shows 1,549 new, 3,675 increased, 3,484 reduced and 1,506 closed positions. Its largest new stake was Boeing: 345,653 shares worth $66.7M. The largest sale was NVIDIA, an estimated $117M.
By sector, the portfolio is most concentrated in Technology at 0.38% of assets, up from 0.33% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2024 buy was Boeing: 345,653 shares worth $66.7M.
- Simplex Trading added most to Pfizer in Q1 2024, an estimated $89.5M increase.
- Simplex Trading's biggest Q1 2024 reduction was NVIDIA, cutting an estimated $117M.
- Simplex Trading fully exited Citigroup in Q1 2024, selling an estimated $59.8M.
- Simplex Trading's ten largest holdings make up 47% of its $173B portfolio in Q1 2024.
- Simplex Trading opened 1,549 new positions and closed 1,506 in Q1 2024.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $173B.
Based on Simplex Trading's 13F filing for Q1 2024, filed 25 Apr 2024.