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 | |
|---|---|---|---|---|---|---|
1876
Vanguard FTSE Emerging Markets ETF
VWO
$119B
| $1.98M | ﹤0.01% |
+50,849
| New | +$1.94M |
|
1877
CALL
e.l.f. Beauty
ELF
$4.56B
| $1.97M | ﹤0.01% |
35,700
-103,500
| -74% | -$5.07M |
|
1878
CALL
MannKind Corp
MNKD
$1.28B
| $1.97M | ﹤0.01% |
373,200
+90,600
| +32% | +$371K |
|
1879
Sonoco
SON
$5.76B
| $1.96M | ﹤0.01% |
32,323
+7,153
| +28% | +$430K |
|
1880
Haleon
HLN
$43.1B
| $1.96M | ﹤0.01% |
244,714
+43,607
| +22% | +$297K |
|
|
CTLT
1881
CALL
DELISTED
CATALENT, INC.
CTLT
| $1.96M | ﹤0.01% |
43,500
+35,600
| +451% | +$1.94M |
|
1882
PUT
Albertsons Companies
ACI
$5.4B
| $1.96M | ﹤0.01% |
94,300
+1,900
| +2% | +$41.8K |
|
|
SGEN
1883
CALL
DELISTED
Seagen Inc. Common Stock
SGEN
| $1.95M | ﹤0.01% |
15,200
-73,400
| -83% | -$9.47M |
|
1884
CALL
Saia
SAIA
$11.3B
| $1.95M | ﹤0.01% |
9,300
+5,700
| +158% | +$1.24M |
|
|
ACB
1885
CALL
Aurora Cannabis
ACB
$165M
| $1.95M | ﹤0.01% |
211,210
+12,190
| +6% | +$145K |
|
|
CEQP
1886
CALL
DELISTED
Crestwood Equity Partners LP
CEQP
| $1.95M | ﹤0.01% |
74,400
+19,100
| +35% | +$551K |
|
|
NOVA
1887
PUT
DELISTED
Sunnova Energy
NOVA
| $1.95M | ﹤0.01% |
108,000
-32,700
| -23% | -$658K |
|
1888
CALL
Legend Biotech
LEGN
$4.3B
| $1.94M | ﹤0.01% |
38,900
-19,200
| -33% | -$930K |
|
|
SYNH
1889
DELISTED
Syneos Health, Inc. Class A Common Stock
SYNH
| $1.94M | ﹤0.01% |
+52,864
| New | +$2.09M |
|
1890
PUT
Lemonade
LMND
$4.62B
| $1.94M | ﹤0.01% |
141,700
+24,500
| +21% | +$484K |
|
|
PBT
1891
PUT
Permian Basin Royalty Trust
PBT
$1.36B
| $1.94M | ﹤0.01% |
76,900
+6,200
| +9% | +$128K |
|
1892
iShares MSCI United Kingdom ETF
EWU
$4.04B
| $1.94M | ﹤0.01% |
+63,168
| New | +$1.85M |
|
1893
CALL
Joby Aviation
JOBY
$6.82B
| $1.94M | ﹤0.01% |
577,900
+87,600
| +18% | +$355K |
|
1894
PUT
dLocal
DLO
$4.26B
| $1.93M | ﹤0.01% |
124,000
-41,100
| -25% | -$723K |
|
1895
CenterPoint Energy
CNP
$29.1B
| $1.93M | ﹤0.01% |
64,323
+55,058
| +594% | +$1.6M |
|
|
EMBJ
1896
Embraer S.A. ADS
EMBJ
$11.6B
| $1.92M | ﹤0.01% |
175,629
+79,792
| +83% | +$810K |
|
1897
CALL
Calix
CALX
$2.27B
| $1.92M | ﹤0.01% |
28,000
+10,900
| +64% | +$733K |
|
1898
PUT
Mid-America Apartment Communities
MAA
$15.6B
| $1.92M | ﹤0.01% |
12,200
-9,600
| -44% | -$1.5M |
|
|
ITCI
1899
PUT
DELISTED
Intra-Cellular Therapies Inc.
ITCI
| $1.92M | ﹤0.01% |
36,200
| – | – |
|
1900
PUT
Tanger
SKT
$4.82B
| $1.91M | ﹤0.01% |
106,700
-2,900
| -3% | -$52.1K |
|
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.