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 | |
|---|---|---|---|---|---|---|
1051
PUT
Haemonetics
HAE
$3.52B
| $4.55M | 0.01% |
383
+357
| +1,373% | +$38.4K |
|
|
GOOS
1052
CALL
Canada Goose Holdings
GOOS
$896M
| $4.54M | 0.01% |
1,527
-322
| -17% | -$10.7K |
|
1053
CALL
PPG Industries
PPG
$25.4B
| $4.54M | 0.01% |
315
+130
| +70% | +$18.1K |
|
|
SAVE
1054
PUT
DELISTED
Spirit Airlines, Inc.
SAVE
| $4.54M | 0.01% |
1,857
-671
| -27% | -$13.9K |
|
|
ABMD
1055
CALL
DELISTED
Abiomed Inc
ABMD
| $4.54M | 0.01% |
140
-84
| -38% | -$23.2K |
|
1056
CALL
IQVIA
IQV
$34.6B
| $4.53M | 0.01% |
253
+125
| +98% | +$21.1K |
|
1057
CALL
Keysight
KEYS
$55.6B
| $4.53M | 0.01% |
343
-321
| -48% | -$37K |
|
1058
CALL
Colgate-Palmolive
CL
$72.1B
| $4.52M | 0.01% |
529
-412
| -44% | -$34.1K |
|
1059
CALL
Cboe Global Markets
CBOE
$29.8B
| $4.52M | 0.01% |
485
+168
| +53% | +$14.7K |
|
1060
CALL
ZTO Express
ZTO
$18.3B
| $4.51M | 0.01% |
1,548
+283
| +22% | +$8.31K |
|
1061
PUT
ICICI Bank
IBN
$105B
| $4.5M | 0.01% |
3,032
+226
| +8% | +$2.84K |
|
1062
CALL
Amdocs
DOX
$5.4B
| $4.5M | 0.01% |
634
+63
| +11% | +$3.96K |
|
1063
CALL
State Street
STT
$50.6B
| $4.49M | 0.01% |
617
+300
| +95% | +$20.4K |
|
1064
CALL
Halliburton
HAL
$27.3B
| $4.48M | 0.01% |
2,369
-981
| -29% | -$15.2K |
|
1065
Atlassian
TEAM
$20.3B
| $4.48M | 0.01% |
+19,140
| New | +$4.05M |
|
1066
CALL
Fox Class B
FOX
$20.7B
| $4.47M | 0.01% |
1,536
-587
| -28% | -$16.3K |
|
|
CHL
1067
CALL
DELISTED
China Mobile Limited
CHL
| $4.46M | 0.01% |
1,563
+261
| +20% | +$8.07K |
|
1068
CALL
Check Point Software Technologies
CHKP
$13.1B
| $4.45M | 0.01% |
335
-119
| -26% | -$14.5K |
|
1069
CALL
Kinder Morgan
KMI
$72.9B
| $4.45M | 0.01% |
3,257
+443
| +16% | +$5.93K |
|
1070
CALL
Estee Lauder
EL
$28.9B
| $4.45M | 0.01% |
167
-61
| -27% | -$14.7K |
|
1071
PUT
Emerson Electric
EMR
$81.2B
| $4.44M | 0.01% |
552
-72
| -12% | -$5.35K |
|
|
NTR
1072
PUT
DELISTED
NEW YORK MORTGAGE TRUST INC
NTR
| $4.44M | 0.01% |
12,024
+383
| +3% | +$141K |
|
1073
PUT
Virgin Galactic
SPCE
$332M
| $4.43M | 0.01% |
93
-102
| -52% | -$47.6K |
|
1074
CALL
Stryker
SYK
$122B
| $4.43M | 0.01% |
181
-194
| -52% | -$43.9K |
|
1075
CALL
MP Materials
MP
$7.95B
| $4.43M | 0.01% |
1,376
+1,197
| +669% | +$23.2K |
|
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.