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 | |
|---|---|---|---|---|---|---|
|
IMVP
4001
Invesco India ETF
IMVP
$125M
| $316K | ﹤0.01% |
13,652
+12,490
| +1,075% | +$263K |
|
4002
Coherent
COHR
$47.6B
| $315K | ﹤0.01% |
4,147
+1,180
| +40% | +$69.9K |
|
4003
CALL
Warrior Met Coal
HCC
$4.17B
| $315K | ﹤0.01% |
148
-785
| -84% | -$13.8K |
|
4004
CALL
Lexicon Pharmaceuticals
LXRX
$1.04B
| $315K | ﹤0.01% |
922
+771
| +511% | +$1.47K |
|
4005
CALL
OneSpaWorld
OSW
$2.82B
| $315K | ﹤0.01% |
311
+288
| +1,252% | +$2.28K |
|
4006
RCI Hospitality Holdings
RICK
$203M
| $315K | ﹤0.01% |
+7,996
| New | +$221K |
|
|
GP
4007
CALL
GreenPower Motor Co
GP
$10.6M
| $314K | ﹤0.01% |
+11
| New | +$1.77K |
|
4008
SI-BONE Inc
SIBN
$795M
| $314K | ﹤0.01% |
+10,511
| New | +$256K |
|
|
YSG
4009
Yatsen Holding
YSG
$322M
| $314K | ﹤0.01% |
+3,703
| New | +$310K |
|
|
INFN
4010
PUT
DELISTED
Infinera Corporation Common Stock
INFN
| $314K | ﹤0.01% |
300
-138
| -32% | -$1.09K |
|
|
GRA
4011
DELISTED
W.R. Grace & Co.
GRA
| $314K | ﹤0.01% |
+5,731
| New | +$288K |
|
|
MTSC
4012
PUT
DELISTED
MTS Systems Corp
MTSC
| $314K | ﹤0.01% |
54
+2
| +4% | +$72 |
|
4013
CALL
Amcor
AMCR
$21.6B
| $313K | ﹤0.01% |
53
-56
| -51% | -$3.19K |
|
4014
CALL
HUB Group
HUBG
$2.92B
| $313K | ﹤0.01% |
110
+70
| +175% | +$1.9K |
|
4015
Yelp
YELP
$1.51B
| $313K | ﹤0.01% |
9,599
-27,391
| -74% | -$719K |
|
|
VBIV
4016
CALL
DELISTED
VBI Vaccines, Inc. New Common Stock (Canada)
VBIV
| $313K | ﹤0.01% |
38
+10
| +36% | +$853 |
|
4017
PUT
Avantor
AVTR
$8.48B
| $312K | ﹤0.01% |
111
-170
| -60% | -$4.38K |
|
4018
Progyny
PGNY
$2.41B
| $312K | ﹤0.01% |
+7,381
| New | +$240K |
|
4019
PUT
W.R. Berkley
WRB
$28.3B
| $312K | ﹤0.01% |
106
+56
| +112% | +$1.61K |
|
|
PING
4020
DELISTED
Ping Identity Holding Corp.
PING
| $312K | ﹤0.01% |
10,928
+10,542
| +2,731% | +$292K |
|
4021
Ardelyx
ARDX
$1.26B
| $311K | ﹤0.01% |
+48,205
| New | +$286K |
|
4022
CALL
Bright Horizons
BFAM
$4.24B
| $311K | ﹤0.01% |
18
+7
| +64% | +$1.15K |
|
4023
CALL
National Health Investors
NHI
$3.81B
| $311K | ﹤0.01% |
45
-1
| -2% | -$64 |
|
4024
CALL
Workiva
WK
$3.28B
| $311K | ﹤0.01% |
+34
| New | +$2.39K |
|
4025
PUT
Advanced Energy
AEIS
$10.9B
| $310K | ﹤0.01% |
32
+24
| +300% | +$2.04K |
|
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.