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 | |
|---|---|---|---|---|---|---|
1976
CALL
RUM Group Inc
RUM
$1.57B
| $1.75M | ﹤0.01% |
293,800
-20,200
| -6% | -$194K |
|
1977
CALL
VF Corp
VFC
$6.68B
| $1.75M | ﹤0.01% |
63,300
-158,300
| -71% | -$4.65M |
|
1978
CALL
Cinemark Holdings
CNK
$3.82B
| $1.75M | ﹤0.01% |
201,600
+128,000
| +174% | +$1.44M |
|
1979
CALL
Viking Therapeutics
VKTX
$4.04B
| $1.74M | ﹤0.01% |
185,400
+137,200
| +285% | +$612K |
|
1980
CALL
Camping World
CWH
$363M
| $1.74M | ﹤0.01% |
78,000
+39,400
| +102% | +$1.02M |
|
1981
iShares Core S&P 500 ETF
IVV
$876B
| $1.74M | ﹤0.01% |
+4,521
| New | +$1.74M |
|
1982
CALL
Equitable Holdings
EQH
$13.1B
| $1.74M | ﹤0.01% |
60,500
+22,900
| +61% | +$678K |
|
1983
CALL
GDS Holdings
GDS
$6.34B
| $1.73M | ﹤0.01% |
84,000
-22,200
| -21% | -$340K |
|
|
BIG
1984
DELISTED
Big Lots, Inc.
BIG
| $1.73M | ﹤0.01% |
+117,441
| New | +$2.02M |
|
1985
PUT
Citizens Financial Group
CFG
$30.4B
| $1.72M | ﹤0.01% |
43,700
-24,500
| -36% | -$957K |
|
1986
PUT
Papa John's
PZZA
$999M
| $1.72M | ﹤0.01% |
20,900
-1,700
| -8% | -$134K |
|
1987
Vornado Realty Trust
VNO
$7.47B
| $1.72M | ﹤0.01% |
+82,680
| New | +$1.89M |
|
1988
CALL
Maximus
MMS
$3.14B
| $1.72M | ﹤0.01% |
+23,400
| New | +$1.51M |
|
1989
State Street Materials Select Sector SPDR ETF
XLB
$8.51B
| $1.71M | ﹤0.01% |
44,104
-93,242
| -68% | -$3.58M |
|
1990
CALL
Invitation Homes
INVH
$17.7B
| $1.71M | ﹤0.01% |
57,700
-22,700
| -28% | -$719K |
|
1991
iShares MSCI Singapore ETF
EWS
$1.01B
| $1.71M | ﹤0.01% |
90,762
+78,521
| +641% | +$1.42M |
|
1992
Hewlett Packard
HPE
$63.2B
| $1.7M | ﹤0.01% |
+106,521
| New | +$1.57M |
|
1993
PUT
NCR Voyix
VYX
$1.06B
| $1.7M | ﹤0.01% |
118,175
-21,516
| -15% | -$286K |
|
|
FTCH
1994
DELISTED
Farfetch Limited Class A Ordinary Shares
FTCH
| $1.69M | ﹤0.01% |
357,813
-18,978
| -5% | -$132K |
|
1995
PUT
Otis Worldwide
OTIS
$27.4B
| $1.69M | ﹤0.01% |
21,600
+1,400
| +7% | +$103K |
|
1996
CALL
Geron
GERN
$911M
| $1.69M | ﹤0.01% |
698,400
+184,000
| +36% | +$412K |
|
|
SIX
1997
PUT
DELISTED
Six Flags Entertainment Corp.
SIX
| $1.69M | ﹤0.01% |
72,700
+25,200
| +53% | +$542K |
|
1998
PUT
Everest Group
EG
$15.2B
| $1.69M | ﹤0.01% |
5,100
-6,300
| -55% | -$1.96M |
|
1999
Nutanix
NTNX
$14.9B
| $1.68M | ﹤0.01% |
+64,641
| New | +$1.76M |
|
2000
Innoviz Technologies
INVZ
$135M
| $1.68M | ﹤0.01% |
427,709
+281,692
| +193% | +$1.34M |
|
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.