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 | |
|---|---|---|---|---|---|---|
1676
CALL
Coherent
COHR
$55.2B
| $2.57M | ﹤0.01% |
73,300
-211,800
| -74% | -$7.37M |
|
1677
PUT
LCI Industries
LCII
$2.51B
| $2.57M | ﹤0.01% |
27,800
+24,900
| +859% | +$2.44M |
|
|
VRAY
1678
DELISTED
ViewRay, Inc.
VRAY
| $2.57M | ﹤0.01% |
573,014
+253,430
| +79% | +$1.1M |
|
1679
CALL
Halozyme
HALO
$9.72B
| $2.57M | ﹤0.01% |
45,100
+32,600
| +261% | +$1.67M |
|
1680
PUT
Molson Coors Class B
TAP
$7.68B
| $2.56M | ﹤0.01% |
49,800
-59,400
| -54% | -$3.05M |
|
|
FITB
1681
CALL
Fifth Third Bancorp
FITB
$52B
| $2.56M | ﹤0.01% |
78,000
-100,900
| -56% | -$3.44M |
|
1682
iShares JPMorgan USD Emerging Markets Bond ETF
EMB
$14.9B
| $2.56M | ﹤0.01% |
+30,219
| New | +$2.5M |
|
1683
PUT
Ross Stores
ROST
$76.6B
| $2.55M | ﹤0.01% |
22,000
-15,800
| -42% | -$1.61M |
|
1684
CALL
Ares Capital
ARCC
$13.5B
| $2.55M | ﹤0.01% |
138,000
+9,600
| +7% | +$180K |
|
1685
CALL
Omnicom Group
OMC
$22.7B
| $2.54M | ﹤0.01% |
31,200
+11,500
| +58% | +$854K |
|
1686
PUT
CSX Corp
CSX
$98.6B
| $2.54M | ﹤0.01% |
82,100
-57,400
| -41% | -$1.73M |
|
|
BRSL
1687
PUT
Brightstar Lottery PLC
BRSL
$1.91B
| $2.54M | ﹤0.01% |
112,100
-104,300
| -48% | -$2.26M |
|
1688
PUT
L3Harris
LHX
$55.9B
| $2.54M | ﹤0.01% |
12,200
-14,600
| -54% | -$3.29M |
|
1689
CALL
Nu Holdings
NU
$68.1B
| $2.54M | ﹤0.01% |
623,600
+9,500
| +2% | +$41.3K |
|
1690
CALL
StoneCo
STNE
$2.62B
| $2.54M | ﹤0.01% |
268,900
-25,400
| -9% | -$266K |
|
|
AKRO
1691
PUT
DELISTED
Akero Therapeutics
AKRO
| $2.54M | ﹤0.01% |
46,300
-69,100
| -60% | -$2.96M |
|
|
CHGX
1692
CALL
DELISTED
AXS Change Finance ESG ETF
CHGX
| $2.53M | ﹤0.01% |
45,400
-30,300
| -40% | -$820K |
|
1693
PUT
FerroAtlántica
GSM
$628M
| $2.52M | ﹤0.01% |
655,000
+50,600
| +8% | +$252K |
|
1694
CALL
IQVIA
IQV
$34.7B
| $2.52M | ﹤0.01% |
12,300
+5,200
| +73% | +$1.05M |
|
1695
CALL
Griffon
GFF
$4.16B
| $2.51M | ﹤0.01% |
70,200
-14,800
| -17% | -$494K |
|
1696
CALL
Winnebago Industries
WGO
$870M
| $2.51M | ﹤0.01% |
47,600
+20,900
| +78% | +$1.19M |
|
|
EMBJ
1697
PUT
Embraer S.A. ADS
EMBJ
$11.6B
| $2.5M | ﹤0.01% |
229,100
+94,800
| +71% | +$962K |
|
1698
CALL
Acuity Brands
AYI
$9.88B
| $2.5M | ﹤0.01% |
15,100
+14,000
| +1,273% | +$2.49M |
|
1699
PUT
Corteva
CTVA
$59.7B
| $2.5M | ﹤0.01% |
42,500
+19,500
| +85% | +$1.23M |
|
1700
CALL
Itaú Unibanco
ITUB
$91.3B
| $2.5M | ﹤0.01% |
714,357
+153,182
| +27% | +$696K |
|
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.