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 | |
|---|---|---|---|---|---|---|
1726
CALL
STMicroelectronics
STM
$46B
| $2.42M | ﹤0.01% |
67,900
-14,400
| -17% | -$508K |
|
1727
CALL
CoStar Group
CSGP
$11.3B
| $2.41M | ﹤0.01% |
31,200
-10,900
| -26% | -$852K |
|
1728
CALL
nCino
NCNO
$1.81B
| $2.41M | ﹤0.01% |
91,100
+2,400
| +3% | +$67.5K |
|
1729
Cheniere Energy
LNG
$56.5B
| $2.41M | ﹤0.01% |
+16,056
| New | +$2.69M |
|
1730
CALL
Boston Beer
SAM
$1.88B
| $2.4M | ﹤0.01% |
7,300
-4,800
| -40% | -$1.74M |
|
1731
CALL
KB Home
KBH
$3.48B
| $2.4M | ﹤0.01% |
75,500
-105,300
| -58% | -$3.14M |
|
1732
CALL
Jabil
JBL
$32.8B
| $2.4M | ﹤0.01% |
35,200
-53,800
| -60% | -$3.56M |
|
1733
CALL
F5
FFIV
$22.1B
| $2.4M | ﹤0.01% |
16,700
-20,800
| -55% | -$3.04M |
|
1734
CALL
Vipshop
VIPS
$6.84B
| $2.39M | ﹤0.01% |
175,200
+52,700
| +43% | +$523K |
|
1735
Applovin
APP
$132B
| $2.39M | ﹤0.01% |
+226,796
| New | +$3.33M |
|
1736
CALL
Dillards
DDS
$8.87B
| $2.39M | ﹤0.01% |
7,900
-600
| -7% | -$195K |
|
1737
State Street SPDR S&P Metals & Mining ETF
XME
$4.05B
| $2.38M | ﹤0.01% |
47,824
-12,361
| -21% | -$613K |
|
1738
PUT
Truist Financial
TFC
$63.2B
| $2.38M | ﹤0.01% |
55,300
-11,600
| -17% | -$509K |
|
1739
PUT
Credit Acceptance
CACC
$6B
| $2.37M | ﹤0.01% |
5,000
+3,300
| +194% | +$1.51M |
|
1740
PUT
Kanzhun
BZ
$6.89B
| $2.36M | ﹤0.01% |
116,100
+53,700
| +86% | +$881K |
|
1741
PUT
Williams Companies
WMB
$90.5B
| $2.36M | ﹤0.01% |
71,800
+6,900
| +11% | +$225K |
|
1742
CALL
XPO
XPO
$25B
| $2.36M | ﹤0.01% |
184,200
-89
| -0% | -$3K |
|
1743
CALL
Wingstop
WING
$3.68B
| $2.35M | ﹤0.01% |
17,100
+1,200
| +8% | +$177K |
|
|
MMP
1744
PUT
DELISTED
Magellan Midstream Partners, L.P.
MMP
| $2.34M | ﹤0.01% |
46,700
+31,000
| +197% | +$1.57M |
|
1745
PUT
Teucrium Agricultural Fund
TAGS
$19.6M
| $2.34M | ﹤0.01% |
98,200
-47,300
| -33% | -$1.46M |
|
|
PPLC
1746
PUT
DELISTED
PortfolioPlus S&P 500 ETF
PPLC
| $2.34M | ﹤0.01% |
255,500
-110,000
| -30% | -$1.01M |
|
1747
CALL
Exelixis
EXEL
$13.9B
| $2.34M | ﹤0.01% |
145,900
+33,800
| +30% | +$551K |
|
1748
CALL
United Microelectronic
UMC
$48.9B
| $2.34M | ﹤0.01% |
358,200
-222,300
| -38% | -$1.47M |
|
1749
Apple
AAPL
$4.89T
| $2.34M | ﹤0.01% |
18,000
+1,300
| +8% | +$186K |
|
1750
Wells Fargo
WFC
$261B
| $2.34M | ﹤0.01% |
56,601
-296,240
| -84% | -$13.1M |
|
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.