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 | |
|---|---|---|---|---|---|---|
|
NVO
1326
CALL
Novo Nordisk
NVO
$216B
| $3.23M | ﹤0.01% |
924
+506
| +121% | +$17.5K |
|
1327
CALL
Omega Healthcare
OHI
$15.4B
| $3.22M | ﹤0.01% |
887
+259
| +41% | +$8.78K |
|
1328
CALL
Oshkosh
OSK
$9.67B
| $3.22M | ﹤0.01% |
374
-3
| -0.8% | -$239 |
|
1329
VF Corp
VFC
$6.68B
| $3.22M | ﹤0.01% |
37,683
+31,469
| +506% | +$2.51M |
|
1330
CALL
MSCI
MSCI
$40B
| $3.21M | ﹤0.01% |
72
-132
| -65% | -$51.8K |
|
1331
PUT
Tandem Diabetes Care
TNDM
$1.17B
| $3.21M | ﹤0.01% |
336
+194
| +137% | +$20K |
|
1332
CALL
L3Harris
LHX
$55.9B
| $3.21M | ﹤0.01% |
170
+51
| +43% | +$9.33K |
|
1333
CALL
Tyson Foods
TSN
$20.2B
| $3.21M | ﹤0.01% |
498
-83
| -14% | -$5.16K |
|
|
BIG
1334
PUT
DELISTED
Big Lots, Inc.
BIG
| $3.21M | ﹤0.01% |
747
+523
| +233% | +$25.4K |
|
1335
PUT
Rio Tinto
RIO
$148B
| $3.2M | ﹤0.01% |
425
-318
| -43% | -$20.9K |
|
|
JWN
1336
PUT
DELISTED
Nordstrom
JWN
| $3.19M | ﹤0.01% |
1,023
-2,144
| -68% | -$44.8K |
|
|
ACB
1337
PUT
Aurora Cannabis
ACB
$165M
| $3.19M | ﹤0.01% |
384
+113
| +42% | +$8.23K |
|
1338
CALL
Vanguard High Dividend Yield ETF
VYM
$81.1B
| $3.18M | ﹤0.01% |
348
-418
| -55% | -$36.3K |
|
1339
CALL
Weibo
WB
$1.9B
| $3.18M | ﹤0.01% |
777
-318
| -29% | -$13.4K |
|
1340
CALL
Vertiv
VRT
$112B
| $3.18M | ﹤0.01% |
1,705
+1,696
| +18,844% | +$31.2K |
|
1341
PUT
Magna International
MGA
$17.9B
| $3.18M | ﹤0.01% |
449
+397
| +763% | +$23.4K |
|
|
BLUE
1342
PUT
DELISTED
bluebird bio
BLUE
| $3.18M | ﹤0.01% |
57
+12
| +27% | +$7.61K |
|
1343
PUT
Church & Dwight Co
CHD
$23.1B
| $3.17M | ﹤0.01% |
364
-215
| -37% | -$19K |
|
1344
PUT
PACCAR
PCAR
$69.6B
| $3.17M | ﹤0.01% |
552
+27
| +5% | +$1.59K |
|
1345
CALL
Silicon Laboratories
SLAB
$7.15B
| $3.17M | ﹤0.01% |
249
+211
| +555% | +$23.8K |
|
1346
PUT
Inseego
INSG
$108M
| $3.17M | ﹤0.01% |
205
+125
| +156% | +$13.8K |
|
|
JNPR
1347
CALL
DELISTED
Juniper Networks
JNPR
| $3.16M | ﹤0.01% |
1,403
+508
| +57% | +$11.1K |
|
1348
CALL
Martin Marietta Materials
MLM
$33.6B
| $3.15M | ﹤0.01% |
111
+21
| +23% | +$5.59K |
|
|
AVLR
1349
PUT
DELISTED
Avalara, Inc.
AVLR
| $3.15M | ﹤0.01% |
191
+28
| +17% | +$4.48K |
|
1350
CALL
BJs Wholesale Club
BJ
$11.9B
| $3.14M | ﹤0.01% |
842
+416
| +98% | +$16.6K |
|
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.