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 | |
|---|---|---|---|---|---|---|
1826
CALL
Frontline
FRO
$8.75B
| $2.11M | ﹤0.01% |
173,500
-62,600
| -27% | -$804K |
|
1827
PUT
Nano X Imaging
NNOX
$62.4M
| $2.1M | ﹤0.01% |
285,000
+244,800
| +609% | +$2.71M |
|
1828
CALL
Huntsman Corp
HUN
$2.24B
| $2.1M | ﹤0.01% |
76,500
-88,900
| -54% | -$2.42M |
|
1829
CALL
Group 1 Automotive
GPI
$3.94B
| $2.09M | ﹤0.01% |
11,600
+10,500
| +955% | +$1.85M |
|
1830
CALL
Zions Bancorporation
ZION
$10.1B
| $2.09M | ﹤0.01% |
42,500
-6,900
| -14% | -$345K |
|
1831
PUT
Vaxcyte
PCVX
$7.89B
| $2.08M | ﹤0.01% |
+43,400
| New | +$1.7M |
|
1832
CALL
Eldorado Gold
EGO
$8.31B
| $2.08M | ﹤0.01% |
248,600
+42,800
| +21% | +$303K |
|
1833
CALL
Teradyne
TER
$54.8B
| $2.08M | ﹤0.01% |
23,800
-19,000
| -44% | -$1.63M |
|
|
FLG
1834
PUT
Flagstar Bank National Association
FLG
$5.77B
| $2.08M | ﹤0.01% |
80,433
+65,533
| +440% | +$1.75M |
|
|
COOP
1835
CALL
DELISTED
Mr. Cooper
COOP
| $2.07M | ﹤0.01% |
51,700
+28,300
| +121% | +$1.19M |
|
|
PR
1836
PUT
Permian Resources
PR
$17.9B
| $2.07M | ﹤0.01% |
220,200
-800
| -0.4% | -$7.66K |
|
1837
CALL
OneMain Financial
OMF
$6.9B
| $2.07M | ﹤0.01% |
62,100
+16,600
| +36% | +$589K |
|
1838
PUT
UiPath
PATH
$5.62B
| $2.07M | ﹤0.01% |
162,600
-89,400
| -35% | -$1.1M |
|
|
RFP
1839
PUT
DELISTED
Resolute Forest Products Inc.
RFP
| $2.07M | ﹤0.01% |
95,700
-11,800
| -11% | -$247K |
|
1840
PUT
SentinelOne
S
$6.22B
| $2.06M | ﹤0.01% |
141,400
+93,100
| +193% | +$1.72M |
|
1841
CALL
Unum
UNM
$13.8B
| $2.06M | ﹤0.01% |
50,300
+11,300
| +29% | +$473K |
|
1842
PUT
Zevra Therapeutics
ZVRA
$563M
| $2.06M | ﹤0.01% |
449,500
-21,400
| -5% | -$109K |
|
|
AVTA
1843
CALL
DELISTED
Avantax, Inc. Common Stock
AVTA
| $2.06M | ﹤0.01% |
80,800
+30,700
| +61% | +$703K |
|
1844
PUT
Warner Music
WMG
$13.8B
| $2.06M | ﹤0.01% |
58,800
+19,000
| +48% | +$554K |
|
|
IPG
1845
CALL
DELISTED
Interpublic Group of Companies
IPG
| $2.06M | ﹤0.01% |
61,800
+53,500
| +645% | +$1.66M |
|
1846
CALL
Invesco Equal Weight 0-30 Year Treasury ETF
GOVI
$1.22B
| $2.06M | ﹤0.01% |
40,300
-28,300
| -41% | -$815K |
|
1847
CALL
Nordic American Tanker
NAT
$1.37B
| $2.06M | ﹤0.01% |
671,900
+638,400
| +1,906% | +$2.06M |
|
1848
iShares US Home Construction ETF
ITB
$2.41B
| $2.05M | ﹤0.01% |
+33,887
| New | +$1.96M |
|
1849
PUT
MPLX
MPLX
$59.5B
| $2.05M | ﹤0.01% |
62,500
-122,600
| -66% | -$4.01M |
|
|
SMAR
1850
CALL
DELISTED
Smartsheet Inc.
SMAR
| $2.05M | ﹤0.01% |
52,000
-5,400
| -9% | -$184K |
|
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.