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 | |
|---|---|---|---|---|---|---|
2376
CALL
Amcor
AMCR
$20.6B
| $1.1M | ﹤0.01% |
18,440
+5,660
| +44% | +$330K |
|
|
COOP
2377
PUT
DELISTED
Mr. Cooper
COOP
| $1.09M | ﹤0.01% |
27,300
+5,800
| +27% | +$245K |
|
2378
CALL
Liberty Energy
LBRT
$2.83B
| $1.09M | ﹤0.01% |
68,400
-400
| -0.6% | -$6.36K |
|
2379
PUT
e.l.f. Beauty
ELF
$4.56B
| $1.09M | ﹤0.01% |
19,800
-20,500
| -51% | -$1M |
|
2380
CALL
Ubiquiti
UI
$31.8B
| $1.09M | ﹤0.01% |
4,000
+3,800
| +1,900% | +$1.13M |
|
2381
PUT
Calumet Specialty Products
CLMT
$3.63B
| $1.09M | ﹤0.01% |
64,700
-17,900
| -22% | -$289K |
|
2382
CALL
Universal Display
OLED
$3.71B
| $1.09M | ﹤0.01% |
10,100
-37,400
| -79% | -$3.92M |
|
2383
PUT
Lumentum
LITE
$59.4B
| $1.09M | ﹤0.01% |
20,900
+7,100
| +51% | +$436K |
|
|
PDCE
2384
CALL
DELISTED
PDC Energy, Inc.
PDCE
| $1.08M | ﹤0.01% |
17,100
-62,800
| -79% | -$4.38M |
|
2385
CALL
Galicia Financial Group
GGAL
$7.92B
| $1.08M | ﹤0.01% |
111,500
-18,000
| -14% | -$142K |
|
2386
PUT
SM Energy
SM
$7.96B
| $1.08M | ﹤0.01% |
31,100
-84,800
| -73% | -$3.53M |
|
2387
Fortinet
FTNT
$112B
| $1.08M | ﹤0.01% |
22,077
-56,599
| -72% | -$2.95M |
|
2388
AdvisorShares Pure US Cannabis ETF
MSOS
$864M
| $1.08M | ﹤0.01% |
154,373
+152,540
| +8,322% | +$1.57M |
|
2389
Global Partners
GLP
$1.64B
| $1.08M | ﹤0.01% |
31,004
+30,146
| +3,514% | +$931K |
|
2390
Petrobras
PBR
$121B
| $1.08M | ﹤0.01% |
101,168
-1,113,362
| -92% | -$13.4M |
|
2391
PUT
ADT
ADT
$5.16B
| $1.08M | ﹤0.01% |
118,700
-47,300
| -28% | -$421K |
|
2392
CALL
Darling Ingredients
DAR
$9.93B
| $1.08M | ﹤0.01% |
17,200
-6,300
| -27% | -$444K |
|
2393
CALL
ARS Pharmaceuticals
SPRY
$590M
| $1.07M | ﹤0.01% |
126,000
-144,300
| -53% | -$936K |
|
2394
Lincoln National
LNC
$7.91B
| $1.07M | ﹤0.01% |
34,937
-7,478
| -18% | -$297K |
|
|
XM
2395
PUT
DELISTED
Qualtrics International Inc. Class A Common Stock
XM
| $1.07M | ﹤0.01% |
103,400
-263,000
| -72% | -$2.76M |
|
2396
CALL
CONMED
CNMD
$1.29B
| $1.07M | ﹤0.01% |
+12,100
| New | +$1M |
|
2397
PUT
McCormick & Company Non-Voting
MKC
$13.4B
| $1.07M | ﹤0.01% |
12,900
+5,800
| +82% | +$468K |
|
2398
PUT
Arbor Realty Trust
ABR
$960M
| $1.07M | ﹤0.01% |
80,900
+23,300
| +40% | +$317K |
|
2399
PUT
SkinHealth Systems
SKIN
$94.9M
| $1.07M | ﹤0.01% |
117,300
+56,500
| +93% | +$610K |
|
|
BLUE
2400
PUT
DELISTED
bluebird bio
BLUE
| $1.07M | ﹤0.01% |
6,920
+4,390
| +174% | +$618K |
|
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.