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 | |
|---|---|---|---|---|---|---|
7251
Ashland
ASH
$3.31B
| $13K | ﹤0.01% |
+128
| New | +$13.5K |
|
7252
CALL
Credicorp
BAP
$32B
| $13K | ﹤0.01% |
100
| – | – |
|
|
7253
PUT
Credicorp
BAP
$32B
| $13K | ﹤0.01% |
100
| – | – |
|
|
BASE
7254
CALL
DELISTED
Couchbase
BASE
| $13K | ﹤0.01% |
1,000
-200
| -17% | -$2.59K |
|
7255
Smartbird Inc
BIRD
$19.8M
| $13K | ﹤0.01% |
284
-727
| -72% | -$42.6K |
|
|
SRTA
7256
PUT
Strata Critical Medical Inc
SRTA
$437M
| $13K | ﹤0.01% |
3,700
+700
| +23% | +$2.99K |
|
7257
CALL
Cognyte Software
CGNT
$652M
| $13K | ﹤0.01% |
4,300
-5,600
| -57% | -$16.4K |
|
7258
Chord Energy
CHRD
$7.85B
| $13K | ﹤0.01% |
+100
| New | +$14.7K |
|
7259
PUT
Clarus
CLAR
$123M
| $13K | ﹤0.01% |
1,700
-120,100
| -99% | -$1.17M |
|
7260
PUT
Cimpress
CMPR
$2.41B
| $13K | ﹤0.01% |
+500
| New | +$13K |
|
7261
CALL
Traeger
COOK
$172M
| $13K | ﹤0.01% |
98
-1,250
| -93% | -$209K |
|
7262
Curis
CRIS
$10.1M
| $13K | ﹤0.01% |
61
+17
| +39% | +$4.99K |
|
7263
PUT
Dave Inc
DAVE
$4.79B
| $13K | ﹤0.01% |
78
-197
| -72% | -$2.1K |
|
7264
PUT
Dover
DOV
$27.5B
| $13K | ﹤0.01% |
100
-4,600
| -98% | -$611K |
|
|
DSL
7265
DoubleLine Income Solutions Fund
DSL
$1.23B
| $13K | ﹤0.01% |
1,177
-1,485
| -56% | -$16.9K |
|
7266
State Street SPDR S&P International Dividend ETF
DWX
$526M
| $13K | ﹤0.01% |
+431
| New | +$13.4K |
|
|
DX
7267
Dynex Capital
DX
$3.15B
| $13K | ﹤0.01% |
+1,066
| New | +$13.2K |
|
7268
PUT
Enanta Pharmaceuticals
ENTA
$371M
| $13K | ﹤0.01% |
300
-2,100
| -88% | -$95.7K |
|
7269
CALL
Eagle Materials
EXP
$6.28B
| $13K | ﹤0.01% |
+100
| New | +$12.6K |
|
|
DMC
7270
PUT
Del Monte Corp
DMC
$1.39B
| $13K | ﹤0.01% |
500
-1,900
| -79% | -$50K |
|
|
FLNT
7271
PUT
Fluent
FLNT
$102M
| $13K | ﹤0.01% |
+2,100
| New | +$15.4K |
|
7272
Foster
FSTR
$430M
| $13K | ﹤0.01% |
1,381
+405
| +41% | +$4.11K |
|
7273
Goldman Sachs Hedge Industry VIP ETF
GVIP
$566M
| $13K | ﹤0.01% |
+200
| New | +$14.1K |
|
7274
CALL
Healthcare Services Group
HCSG
$1.58B
| $13K | ﹤0.01% |
1,100
| – | – |
|
7275
PUT
Home BancShares
HOMB
$6.22B
| $13K | ﹤0.01% |
600
| – | – |
|
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.