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 | |
|---|---|---|---|---|---|---|
1901
PUT
Lincoln National
LNC
$7.91B
| $1.91M | ﹤0.01% |
62,300
+13,600
| +28% | +$540K |
|
1902
CALL
CVR Partners
UAN
$1.3B
| $1.91M | ﹤0.01% |
19,000
-106,400
| -85% | -$12.5M |
|
1903
STMicroelectronics
STM
$46B
| $1.91M | ﹤0.01% |
+53,718
| New | +$1.89M |
|
1904
Quanterix
QTRX
$173M
| $1.91M | ﹤0.01% |
137,836
+33,923
| +33% | +$390K |
|
1905
PUT
Cheesecake Factory
CAKE
$4.21B
| $1.91M | ﹤0.01% |
60,200
+32,100
| +114% | +$1.07M |
|
1906
CALL
LegalZoom.com
LZ
$1.23B
| $1.91M | ﹤0.01% |
246,300
-37,900
| -13% | -$329K |
|
1907
PUT
Public Storage
PSA
$60.2B
| $1.91M | ﹤0.01% |
6,800
-1,700
| -20% | -$496K |
|
1908
Vanguard S&P 500 Growth ETF
VOOG
$25.4B
| $1.91M | ﹤0.01% |
54,210
+8,610
| +19% | +$311K |
|
1909
CVS Health
CVS
$137B
| $1.9M | ﹤0.01% |
20,420
-31,564
| -61% | -$3.05M |
|
|
EBIX
1910
CALL
DELISTED
Ebix Inc
EBIX
| $1.9M | ﹤0.01% |
95,300
-12,700
| -12% | -$246K |
|
1911
CALL
M&T Bank
MTB
$36.2B
| $1.9M | ﹤0.01% |
13,100
+7,400
| +130% | +$1.22M |
|
1912
PUT
Impinj
PI
$3.89B
| $1.9M | ﹤0.01% |
17,400
+16,200
| +1,350% | +$1.71M |
|
1913
CALL
Fiverr
FVRR
$376M
| $1.9M | ﹤0.01% |
65,100
-12,000
| -16% | -$377K |
|
|
AXON
1914
Axon Enterprise
AXON
$40.5B
| $1.9M | ﹤0.01% |
11,423
+7,670
| +204% | +$1.21M |
|
1915
CALL
First Citizens BancShares
FCNCA
$24.6B
| $1.9M | ﹤0.01% |
2,500
+900
| +56% | +$725K |
|
1916
PUT
Weyerhaeuser
WY
$17.3B
| $1.89M | ﹤0.01% |
61,100
+13,400
| +28% | +$415K |
|
1917
Fomento Económico Mexicano
FMX
$43.3B
| $1.89M | ﹤0.01% |
24,242
-16,045
| -40% | -$1.18M |
|
1918
PUT
Exelixis
EXEL
$13.9B
| $1.89M | ﹤0.01% |
117,800
+20,300
| +21% | +$331K |
|
1919
Wynn Resorts
WYNN
$10.1B
| $1.88M | ﹤0.01% |
22,835
-60,898
| -73% | -$4.46M |
|
1920
PUT
Kinsale Capital Group
KNSL
$7.95B
| $1.88M | ﹤0.01% |
7,200
+6,300
| +700% | +$1.82M |
|
1921
PUT
Dropbox
DBX
$6.81B
| $1.88M | ﹤0.01% |
84,000
-115,400
| -58% | -$2.54M |
|
1922
CALL
Paysafe
PSFE
$407M
| $1.88M | ﹤0.01% |
135,200
+96,892
| +253% | +$1.57M |
|
|
SWN
1923
PUT
DELISTED
Southwestern Energy Company
SWN
| $1.88M | ﹤0.01% |
321,000
+158,100
| +97% | +$1.04M |
|
1924
CALL
PPG Industries
PPG
$25.9B
| $1.87M | ﹤0.01% |
14,900
-5,400
| -27% | -$661K |
|
1925
Enovix
ENVX
$862M
| $1.87M | ﹤0.01% |
+172,009
| New | +$2.12M |
|
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.