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 |
Alibaba
BABA
|
+$39.9M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$39M |
| 3 |
Mastercard
MA
|
+$31.3M |
| 4 |
Apple
AAPL
|
+$25.3M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$25.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
JPMorgan Chase
JPM
|
+$52.8M |
| 2 |
TSMC
TSM
|
+$43M |
| 3 |
Amazon
AMZN
|
+$24.7M |
| 4 |
iShares Silver Trust
SLV
|
+$24.2M |
| 5 |
Netflix
NFLX
|
+$21.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.65% |
| 2 | Technology | 0.37% |
| 3 | Healthcare | 0.33% |
| 4 | Industrials | 0.21% |
| 5 | Communication Services | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3576
CALL
Ternium
TX
$9.71B
| $447K | ﹤0.01% |
154
+114
| +285% | +$2.81K |
|
3577
CALL
CNX Resources
CNX
$4.78B
| $446K | ﹤0.01% |
413
-493
| -54% | -$4.97K |
|
3578
PUT
NeoGenomics
NEO
$1.75B
| $446K | ﹤0.01% |
83
-28
| -25% | -$1.26K |
|
|
PPL
3579
PPL Corp
PPL
$27.4B
| $446K | ﹤0.01% |
15,850
+5,339
| +51% | +$152K |
|
3580
CALL
Alaunos Therapeutics
TCRT
$4.57M
| $446K | ﹤0.01% |
12
+9
| +300% | +$3.58K |
|
3581
CALL
Rayonier Advanced Materials
RYAM
$581M
| $445K | ﹤0.01% |
683
+121
| +22% | +$641 |
|
3582
SiriusXM
SIRI
$10.6B
| $445K | ﹤0.01% |
6,987
-25
| -0.4% | -$1.53K |
|
3583
Sterling Infrastructure
STRL
$16.7B
| $444K | ﹤0.01% |
23,879
+17,193
| +257% | +$280K |
|
|
IDEX
3584
PUT
DELISTED
Ideanomics, Inc. Common Stock
IDEX
| $444K | ﹤0.01% |
18
+17
| +1,700% | +$3.14K |
|
3585
PUT
ADT
ADT
$5.34B
| $443K | ﹤0.01% |
565
-434
| -43% | -$3.41K |
|
3586
CALL
Compugen
CGEN
$215M
| $443K | ﹤0.01% |
366
+221
| +152% | +$3.05K |
|
3587
CALL
CryoPort
CYRX
$768M
| $443K | ﹤0.01% |
101
-1,055
| -91% | -$50.3K |
|
3588
Curis
CRIS
$9.3M
| $442K | ﹤0.01% |
135
+132
| +4,400% | +$158K |
|
|
PETQ
3589
CALL
DELISTED
PetIQ, Inc. Class A Common Stock
PETQ
| $442K | ﹤0.01% |
115
| – | – |
|
|
ATCO
3590
CALL
DELISTED
Atlas Corp.
ATCO
| $442K | ﹤0.01% |
408
-150
| -27% | -$1.54K |
|
3591
CALL
Golar LNG
GLNG
$4.93B
| $441K | ﹤0.01% |
458
-444
| -49% | -$3.86K |
|
|
SNBR
3592
DELISTED
Sleep Number
SNBR
| $441K | ﹤0.01% |
5,389
+5,214
| +2,979% | +$362K |
|
|
WPRT
3593
PUT
Westport Fuel Systems
WPRT
$32.7M
| $441K | ﹤0.01% |
83
-45
| -35% | -$1.42K |
|
|
CURO
3594
PUT
DELISTED
CURO Group Holdings Corp.
CURO
| $441K | ﹤0.01% |
308
+286
| +1,300% | +$2.63K |
|
|
AVTA
3595
DELISTED
Avantax, Inc. Common Stock
AVTA
| $441K | ﹤0.01% |
27,748
+9,381
| +51% | +$114K |
|
3596
PUT
Mercury Systems
MRCY
$6B
| $440K | ﹤0.01% |
50
-8
| -14% | -$608 |
|
3597
abrdn Physical Gold Shares ETF
SGOL
$6.9B
| $440K | ﹤0.01% |
24,103
-32,782
| -58% | -$591K |
|
|
QEP
3598
CALL
DELISTED
QEP RESOURCES, INC.
QEP
| $440K | ﹤0.01% |
1,842
+85
| +5% | +$126 |
|
3599
Ford
F
$59.2B
| $439K | ﹤0.01% |
50,000
-281,972
| -85% | -$2.36M |
|
3600
PUT
SoFi Technologies
SOFI
$21.5B
| $439K | ﹤0.01% |
+353
| New | +$3.98K |
|
Similar funds
Simplex Trading's Q4 2020 Portfolio in Review
As of Q4 2020, Simplex Trading held 9,568 positions worth $77.2B, up 5% from $73.5B the previous quarter. Its ten largest holdings account for 42% of the portfolio.
Simplex Trading's Q4 2020 filing shows 1,711 new, 3,402 increased, 3,106 reduced and 1,157 closed positions. Its largest new stake was Alibaba: 143,630 shares worth $33.4M. The largest sale was JPMorgan Chase, an estimated $52.8M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.65% of assets, up from 0.53% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q4 2020 buy was Alibaba: 143,630 shares worth $33.4M.
- Simplex Trading added most to Invesco QQQ Trust in Q4 2020, an estimated $39M increase.
- Simplex Trading's biggest Q4 2020 reduction was JPMorgan Chase, cutting an estimated $52.8M.
- Simplex Trading fully exited Target in Q4 2020, selling an estimated $14.3M.
- Simplex Trading's ten largest holdings make up 42% of its $77.2B portfolio in Q4 2020.
- Simplex Trading opened 1,711 new positions and closed 1,157 in Q4 2020.
- Simplex Trading's portfolio value rose 5% quarter-over-quarter to $77.2B.
Based on Simplex Trading's 13F filing for Q4 2020, filed 2 Feb 2021.