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 | |
|---|---|---|---|---|---|---|
1601
CALL
Conagra Brands
CAG
$7.07B
| $2.83M | ﹤0.01% |
73,200
-33,700
| -32% | -$1.22M |
|
1602
PUT
Dynatrace
DT
$12.1B
| $2.83M | ﹤0.01% |
73,900
-58,800
| -44% | -$2.14M |
|
1603
Alliant Energy
LNT
$19.4B
| $2.83M | ﹤0.01% |
+51,259
| New | +$2.74M |
|
|
JNPR
1604
CALL
DELISTED
Juniper Networks
JNPR
| $2.83M | ﹤0.01% |
88,500
+52,300
| +144% | +$1.58M |
|
1605
CALL
dLocal
DLO
$4.26B
| $2.83M | ﹤0.01% |
181,500
+107,200
| +144% | +$1.89M |
|
1606
Pan American Silver
PAAS
$18.6B
| $2.83M | ﹤0.01% |
172,923
-31,075
| -15% | -$497K |
|
1607
Owens Corning
OC
$11.5B
| $2.82M | ﹤0.01% |
33,070
+27,081
| +452% | +$2.37M |
|
1608
Viatris
VTRS
$20.1B
| $2.82M | ﹤0.01% |
253,142
+170,792
| +207% | +$1.78M |
|
1609
PUT
Sibanye-Stillwater
SBSW
$5.92B
| $2.81M | ﹤0.01% |
263,800
+32,400
| +14% | +$329K |
|
1610
PUT
Yum! Brands
YUM
$41B
| $2.8M | ﹤0.01% |
21,900
+11,300
| +107% | +$1.37M |
|
1611
CALL
Cboe Global Markets
CBOE
$29.8B
| $2.8M | ﹤0.01% |
22,300
-37,700
| -63% | -$4.65M |
|
1612
CALL
Vermilion Energy
VET
$1.73B
| $2.8M | ﹤0.01% |
158,000
+9,200
| +6% | +$187K |
|
1613
CALL
FIVE9
FIVN
$1.77B
| $2.79M | ﹤0.01% |
41,200
+25,200
| +158% | +$1.58M |
|
1614
Marvell Technology
MRVL
$174B
| $2.79M | ﹤0.01% |
75,453
-65,322
| -46% | -$2.67M |
|
1615
Vanguard Dividend Appreciation ETF
VIG
$111B
| $2.79M | ﹤0.01% |
+18,396
| New | +$2.74M |
|
1616
PUT
Kornit Digital
KRNT
$706M
| $2.79M | ﹤0.01% |
121,500
+12,500
| +11% | +$312K |
|
1617
PUT
LKQ Corp
LKQ
$6.58B
| $2.78M | ﹤0.01% |
52,000
-60,300
| -54% | -$3.19M |
|
1618
CALL
Antero Midstream
AM
$10.8B
| $2.77M | ﹤0.01% |
256,900
+27,800
| +12% | +$295K |
|
1619
CALL
Constellation Energy
CEG
$98B
| $2.77M | ﹤0.01% |
32,100
-78,400
| -71% | -$7.05M |
|
1620
Pfizer
PFE
$140B
| $2.77M | ﹤0.01% |
53,990
-801,594
| -94% | -$38.4M |
|
1621
CALL
Thor Industries
THO
$3.99B
| $2.75M | ﹤0.01% |
36,400
-4,900
| -12% | -$394K |
|
|
AYX
1622
CALL
DELISTED
Alteryx Inc
AYX
| $2.75M | ﹤0.01% |
54,200
+10,100
| +23% | +$482K |
|
1623
PUT
IQVIA
IQV
$34.7B
| $2.75M | ﹤0.01% |
13,400
+4,400
| +49% | +$892K |
|
|
FL
1624
CALL
DELISTED
Foot Locker
FL
| $2.74M | ﹤0.01% |
72,600
-22,800
| -24% | -$782K |
|
1625
CALL
TC Energy
TRP
$73.5B
| $2.73M | ﹤0.01% |
68,600
+50,900
| +288% | +$2.21M |
|
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.