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 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
MFA
2001
CALL
MFA Financial
MFA
$929M
| $1.67M | ﹤0.01% |
169,400
+65,200
| +63% | +$656K |
|
|
TE
2002
CALL
T1 Energy
TE
$1.4B
| $1.67M | ﹤0.01% |
191,900
-32,700
| -15% | -$410K |
|
2003
CALL
United States Copper Index Fund
CPER
$742M
| $1.66M | ﹤0.01% |
72,100
-77,000
| -52% | -$1.69M |
|
2004
CALL
Texas Roadhouse
TXRH
$12.7B
| $1.66M | ﹤0.01% |
18,300
+7,700
| +73% | +$740K |
|
2005
CALL
Vertiv
VRT
$112B
| $1.66M | ﹤0.01% |
121,700
+58,800
| +93% | +$784K |
|
2006
CALL
Leggett & Platt
LEG
$1.52B
| $1.66M | ﹤0.01% |
51,500
+3,500
| +7% | +$118K |
|
2007
PUT
ReNew
RNW
$2.24B
| $1.66M | ﹤0.01% |
301,800
+300,800
| +30,080% | +$1.76M |
|
2008
CALL
YPF
YPF
$20.2B
| $1.66M | ﹤0.01% |
180,600
+8,300
| +5% | +$64K |
|
2009
Robinhood
HOOD
$85.2B
| $1.66M | ﹤0.01% |
203,712
+124,391
| +157% | +$1.22M |
|
2010
CALL
RLX Technology
RLX
$2.48B
| $1.66M | ﹤0.01% |
720,400
+277,200
| +63% | +$492K |
|
2011
CALL
Nano X Imaging
NNOX
$62.4M
| $1.65M | ﹤0.01% |
223,800
+53,600
| +31% | +$594K |
|
2012
CALL
Stratasys
SSYS
$697M
| $1.65M | ﹤0.01% |
139,200
-115,700
| -45% | -$1.54M |
|
2013
PUT
Camtek
CAMT
$6.9B
| $1.65M | ﹤0.01% |
75,100
-40,400
| -35% | -$933K |
|
2014
PUT
Amplify Energy
AMPY
$163M
| $1.65M | ﹤0.01% |
187,400
+48,000
| +34% | +$408K |
|
2015
CALL
Gartner
IT
$9.41B
| $1.65M | ﹤0.01% |
4,900
-18,400
| -79% | -$5.94M |
|
2016
PUT
Green Plains
GPRE
$1.19B
| $1.64M | ﹤0.01% |
53,800
-51,400
| -49% | -$1.58M |
|
2017
PUT
Host Hotels & Resorts
HST
$16.8B
| $1.64M | ﹤0.01% |
102,100
+7,200
| +8% | +$126K |
|
|
LAZR
2018
CALL
DELISTED
Luminar Technologies
LAZR
| $1.64M | ﹤0.01% |
22,060
-42,747
| -66% | -$4.65M |
|
|
DVAX
2019
CALL
DELISTED
Dynavax Technologies
DVAX
| $1.63M | ﹤0.01% |
153,600
-7,000
| -4% | -$81.3K |
|
2020
CALL
Universal Health Services
UHS
$9.43B
| $1.63M | ﹤0.01% |
11,600
+1,700
| +17% | +$201K |
|
2021
PUT
uniQure
QURE
$2.68B
| $1.63M | ﹤0.01% |
72,000
+29,100
| +68% | +$628K |
|
|
NNDM
2022
CALL
Nano Dimension
NNDM
$309M
| $1.63M | ﹤0.01% |
709,400
+210,400
| +42% | +$512K |
|
2023
CALL
Asana
ASAN
$1.58B
| $1.63M | ﹤0.01% |
118,100
-91,100
| -44% | -$1.65M |
|
2024
PUT
Helmerich & Payne
HP
$3.53B
| $1.63M | ﹤0.01% |
32,800
-400
| -1% | -$19K |
|
2025
CALL
PureCycle Technologies
PCT
$1.17B
| $1.63M | ﹤0.01% |
240,400
-251,100
| -51% | -$1.81M |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.