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 | |
|---|---|---|---|---|---|---|
4326
Stantec
STN
$8.17B
| $182K | ﹤0.01% |
+3,809
| New | +$184K |
|
|
DCP
4327
DELISTED
DCP Midstream, LP
DCP
| $182K | ﹤0.01% |
+4,717
| New | +$183K |
|
4328
CALL
Ametek
AME
$53.9B
| $181K | ﹤0.01% |
1,300
+300
| +30% | +$39.8K |
|
4329
Dole
DOLE
$1.38B
| $181K | ﹤0.01% |
18,762
+2,867
| +18% | +$26.1K |
|
4330
PUT
Guidewire Software
GWRE
$13.9B
| $181K | ﹤0.01% |
2,900
-27,700
| -91% | -$1.64M |
|
4331
Noble Corp
NE
$6.54B
| $181K | ﹤0.01% |
4,807
+41
| +0.9% | +$1.46K |
|
|
SHOE
4332
PUT
Shoe Station Group
SHOE
$424M
| $181K | ﹤0.01% |
7,600
-17,300
| -69% | -$413K |
|
4333
CALL
ADT
ADT
$5.43B
| $180K | ﹤0.01% |
19,900
-187,100
| -90% | -$1.66M |
|
4334
CALL
CrossAmerica Partners
CAPL
$834M
| $180K | ﹤0.01% |
9,100
+4,700
| +107% | +$92.9K |
|
|
KREF
4335
CALL
KKR Real Estate Finance Trust
KREF
$466M
| $180K | ﹤0.01% |
12,900
-4,700
| -27% | -$76.7K |
|
4336
Life Time Group Holdings
LTH
$10.2B
| $180K | ﹤0.01% |
15,058
+13,988
| +1,307% | +$160K |
|
4337
CALL
Magnolia Oil & Gas
MGY
$5.93B
| $180K | ﹤0.01% |
7,700
-18,000
| -70% | -$439K |
|
|
NETI
4338
CALL
DELISTED
Eneti Inc.
NETI
| $180K | ﹤0.01% |
18,000
-45,500
| -72% | -$404K |
|
4339
Chefs' Warehouse
CHEF
$4.31B
| $179K | ﹤0.01% |
+5,390
| New | +$188K |
|
4340
PUT
3D Systems Corp
DDD
$405M
| $179K | ﹤0.01% |
24,300
-6,700
| -22% | -$58.8K |
|
4341
Evolent Health
EVH
$371M
| $179K | ﹤0.01% |
6,381
-10,126
| -61% | -$290K |
|
|
JWN
4342
DELISTED
Nordstrom
JWN
| $179K | ﹤0.01% |
+11,137
| New | +$213K |
|
|
AIFU
4343
CALL
AIFU Inc
AIFU
$193M
| $179K | ﹤0.01% |
+61
| New | +$142K |
|
|
ABK
4344
PUT
DELISTED
Ambac Financial Group
ABK
| $179K | ﹤0.01% |
10,300
-45,700
| -82% | -$794K |
|
|
DCH
4345
CALL
Dauch Corp
DCH
$1.31B
| $178K | ﹤0.01% |
22,800
-9,400
| -29% | -$84.2K |
|
4346
PUT
Caleres
CAL
$432M
| $178K | ﹤0.01% |
8,000
-41,600
| -84% | -$1.02M |
|
|
DRRX
4347
CALL
DELISTED
DURECT Corp
DRRX
| $178K | ﹤0.01% |
51,600
+46,400
| +892% | +$221K |
|
4348
PUT
Fastly Inc
FSLY
$3.24B
| $178K | ﹤0.01% |
21,800
-35,200
| -62% | -$308K |
|
4349
PUT
Forward Air
FWRD
$461M
| $178K | ﹤0.01% |
1,700
+1,600
| +1,600% | +$168K |
|
4350
IAMGOLD
IAG
$8.05B
| $178K | ﹤0.01% |
69,084
+23,608
| +52% | +$41K |
|
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.