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 | |
|---|---|---|---|---|---|---|
3626
PUT
Crescent Energy
CRGY
$3.44B
| $328K | ﹤0.01% |
27,400
+10,700
| +64% | +$147K |
|
|
EVA
3627
PUT
DELISTED
Enviva Inc.
EVA
| $328K | ﹤0.01% |
6,200
+6,100
| +6,100% | +$349K |
|
3628
CALL
Bread Financial
BFH
$4.36B
| $327K | ﹤0.01% |
9,000
-23,300
| -72% | -$841K |
|
|
ITCI
3629
DELISTED
Intra-Cellular Therapies Inc.
ITCI
| $327K | ﹤0.01% |
6,189
-5,242
| -46% | -$263K |
|
|
SLGC
3630
PUT
DELISTED
SomaLogic, Inc. Class A Common Stock
SLGC
| $327K | ﹤0.01% |
130,500
+9,200
| +8% | +$25.7K |
|
3631
Hudbay
HBM
$9.67B
| $326K | ﹤0.01% |
64,424
-22,063
| -26% | -$106K |
|
3632
CALL
Reinsurance Group of America
RGA
$15.9B
| $326K | ﹤0.01% |
2,300
+1,300
| +130% | +$182K |
|
3633
W.P. Carey
WPC
$16.8B
| $326K | ﹤0.01% |
+4,260
| New | +$320K |
|
|
TGR
3634
PUT
DELISTED
ISHARES TARGET DATE RETIREMENT INCOME ETF
TGR
| $326K | ﹤0.01% |
18,600
-29,400
| -61% | -$515K |
|
3635
CALL
Denali Therapeutics
DNLI
$3.82B
| $325K | ﹤0.01% |
11,700
-700
| -6% | -$20.8K |
|
3636
PUT
Keysight
KEYS
$52.2B
| $325K | ﹤0.01% |
1,900
-1,000
| -34% | -$170K |
|
|
NOTV
3637
DELISTED
Inotiv
NOTV
| $325K | ﹤0.01% |
+65,965
| New | +$820K |
|
3638
CALL
Schneider National
SNDR
$6.34B
| $325K | ﹤0.01% |
13,900
+13,800
| +13,800% | +$323K |
|
3639
PUT
Smith & Wesson
SWBI
$657M
| $325K | ﹤0.01% |
37,500
-31,500
| -46% | -$332K |
|
|
TWKS
3640
CALL
DELISTED
Thoughtworks Holding, Inc. Common Stock
TWKS
| $325K | ﹤0.01% |
31,900
-58,700
| -65% | -$545K |
|
3641
PUT
AerSale
ASLE
$307M
| $324K | ﹤0.01% |
20,000
+13,600
| +213% | +$236K |
|
3642
CALL
Grocery Outlet
GO
$902M
| $324K | ﹤0.01% |
11,100
-1,700
| -13% | -$53.4K |
|
|
PRVB
3643
PUT
DELISTED
Provention Bio, Inc. Common Stock
PRVB
| $324K | ﹤0.01% |
30,700
+18,100
| +144% | +$146K |
|
3644
PUT
GlobalFoundries
GFS
$26.9B
| $323K | ﹤0.01% |
6,000
-88,000
| -94% | -$5.14M |
|
3645
PUT
RadNet
RDNT
$4.97B
| $323K | ﹤0.01% |
17,200
+7,700
| +81% | +$144K |
|
|
STOR
3646
CALL
DELISTED
STORE Capital Corporation
STOR
| $323K | ﹤0.01% |
10,100
-34,000
| -77% | -$1.08M |
|
3647
Comfort Systems
FIX
$57.2B
| $322K | ﹤0.01% |
2,805
+1,761
| +169% | +$205K |
|
|
GTLS
3648
PUT
DELISTED
Chart Industries
GTLS
| $322K | ﹤0.01% |
2,800
+2,600
| +1,300% | +$418K |
|
3649
PUT
Arcus Biosciences
RCUS
$3.4B
| $322K | ﹤0.01% |
15,600
+15,500
| +15,500% | +$427K |
|
3650
PUT
Broadridge
BR
$18.3B
| $321K | ﹤0.01% |
2,400
+1,100
| +85% | +$156K |
|
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.