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 | |
|---|---|---|---|---|---|---|
1551
PUT
TE Connectivity
TEL
$58.8B
| $2.48M | ﹤0.01% |
205
+86
| +72% | +$9.48K |
|
1552
PUT
Mohawk Industries
MHK
$6.9B
| $2.48M | ﹤0.01% |
176
+29
| +20% | +$3.5K |
|
1553
CALL
Chemours
CC
$2.59B
| $2.48M | ﹤0.01% |
999
-261
| -21% | -$6.21K |
|
1554
CALL
JFrog
FROG
$9.71B
| $2.48M | ﹤0.01% |
394
+332
| +535% | +$23.1K |
|
1555
PUT
Trex
TREX
$4.51B
| $2.47M | ﹤0.01% |
295
+197
| +201% | +$15.1K |
|
|
CHU
1556
PUT
DELISTED
China Unicom (HONG KONG) Limited
CHU
| $2.47M | ﹤0.01% |
4,343
+1,268
| +41% | +$8.02K |
|
|
APHA
1557
PUT
DELISTED
Aphria Inc. Common Shares
APHA
| $2.46M | ﹤0.01% |
3,562
-113
| -3% | -$705 |
|
|
FLIR
1558
CALL
DELISTED
FLIR Systems, Inc. (DE) Common Stock
FLIR
| $2.46M | ﹤0.01% |
562
+71
| +14% | +$2.74K |
|
1559
CALL
Sabre
SABR
$656M
| $2.46M | ﹤0.01% |
2,049
-317
| -13% | -$2.93K |
|
1560
PUT
Melco Resorts & Entertainment
MLCO
$2.1B
| $2.46M | ﹤0.01% |
1,327
-1,699
| -56% | -$29.5K |
|
1561
CALL
Laureate Education
LAUR
$5.18B
| $2.46M | ﹤0.01% |
+1,687
| New | +$23.8K |
|
|
ME
1562
PUT
DELISTED
23andMe Holding Co
ME
| $2.46M | ﹤0.01% |
+107
| New | +$23.9K |
|
1563
CALL
Axalta
AXTA
$7.01B
| $2.45M | ﹤0.01% |
859
-345
| -29% | -$9.4K |
|
1564
Varonis Systems
VRNS
$5.25B
| $2.45M | ﹤0.01% |
44,934
+41,235
| +1,115% | +$1.79M |
|
|
TVRD
1565
CALL
Tvardi Therapeutics
TVRD
$23.5M
| $2.45M | ﹤0.01% |
45
+36
| +400% | +$18.9K |
|
1566
CALL
Public Storage
PSA
$60.2B
| $2.45M | ﹤0.01% |
106
-95
| -47% | -$21.8K |
|
1567
WEX
WEX
$6.11B
| $2.44M | ﹤0.01% |
+12,015
| New | +$2.02M |
|
1568
CALL
Sturm, Ruger & Co
RGR
$610M
| $2.44M | ﹤0.01% |
375
-160
| -30% | -$10.3K |
|
|
ICPT
1569
CALL
DELISTED
Intercept Pharmaceuticals, Inc.
ICPT
| $2.44M | ﹤0.01% |
988
+758
| +330% | +$25.1K |
|
1570
PUT
FuelCell Energy
FCEL
$1.7B
| $2.44M | ﹤0.01% |
73
-29
| -28% | -$4.74K |
|
1571
PUT
Vanguard High Dividend Yield ETF
VYM
$81.1B
| $2.43M | ﹤0.01% |
266
+37
| +16% | +$3.21K |
|
1572
Sonos
SONO
$1.75B
| $2.43M | ﹤0.01% |
104,060
+29,856
| +40% | +$557K |
|
1573
CALL
Agnico Eagle Mines
AEM
$72.6B
| $2.43M | ﹤0.01% |
345
-811
| -70% | -$60.5K |
|
1574
PUT
American Electric Power
AEP
$73.7B
| $2.43M | ﹤0.01% |
292
-237
| -45% | -$20.6K |
|
|
TTCF
1575
PUT
DELISTED
Tattooed Chef, Inc Class A Common Stock
TTCF
| $2.43M | ﹤0.01% |
1,061
+184
| +21% | +$3.64K |
|
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.