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 | |
|---|---|---|---|---|---|---|
4501
PUT
SouthState Bank Corp
SSB
$10.3B
| $216K | ﹤0.01% |
+30
| New | +$1.97K |
|
|
EQC
4502
DELISTED
Equity Commonwealth
EQC
| $216K | ﹤0.01% |
+7,951
| New | +$212K |
|
|
CHS
4503
DELISTED
Chicos FAS, Inc.
CHS
| $216K | ﹤0.01% |
136,278
+109,475
| +408% | +$152K |
|
4504
PUT
Lands' End
LE
$378M
| $215K | ﹤0.01% |
100
-122
| -55% | -$2.24K |
|
4505
Methanex
MEOH
$4.23B
| $215K | ﹤0.01% |
+4,667
| New | +$168K |
|
4506
CALL
Verastem
VSTM
$528M
| $215K | ﹤0.01% |
84
-36
| -30% | -$723 |
|
|
VGR
4507
CALL
DELISTED
Vector Group Ltd.
VGR
| $215K | ﹤0.01% |
261
-156
| -37% | -$1.22K |
|
|
RESI
4508
CALL
DELISTED
Front Yard Residential Corporation Common Stock
RESI
| $215K | ﹤0.01% |
133
+106
| +393% | +$1.47K |
|
4509
CALL
Capricor Therapeutics
CAPR
$380M
| $214K | ﹤0.01% |
625
+385
| +160% | +$1.67K |
|
|
TXNM
4510
TXNM Energy Inc
TXNM
$6.39B
| $214K | ﹤0.01% |
+4,416
| New | +$213K |
|
|
BCLI
4511
PUT
DELISTED
BRAINSTORM CELL THERAPUTC
BCLI
| $213K | ﹤0.01% |
31
+17
| +121% | +$2.31K |
|
4512
PUT
FS KKR Capital
FSK
$3.01B
| $213K | ﹤0.01% |
129
+128
| +12,800% | +$2.13K |
|
|
ACH
4513
PUT
Accendra Health
ACH
$254M
| $213K | ﹤0.01% |
79
-100
| -56% | -$2.57K |
|
4514
CALL
Sprout Social
SPT
$530M
| $213K | ﹤0.01% |
47
+43
| +1,075% | +$2.05K |
|
4515
CALL
TherapeuticsMD
TXMD
$23.8M
| $213K | ﹤0.01% |
35
+11
| +46% | +$751 |
|
|
UMPQ
4516
CALL
DELISTED
Umpqua Holdings Corp
UMPQ
| $213K | ﹤0.01% |
141
+16
| +13% | +$219 |
|
4517
CALL
Apogee Enterprises
APOG
$833M
| $212K | ﹤0.01% |
67
+13
| +24% | +$352 |
|
4518
CALL
Unisys
UIS
$252M
| $212K | ﹤0.01% |
108
+77
| +248% | +$1.11K |
|
4519
CALL
W.R. Berkley
WRB
$28.1B
| $212K | ﹤0.01% |
72
+70
| +3,500% | +$2.02K |
|
4520
CALL
AXIS Capital
AXS
$7.81B
| $211K | ﹤0.01% |
42
-17
| -29% | -$824 |
|
4521
Cincinnati Financial
CINF
$27.8B
| $211K | ﹤0.01% |
2,424
-7,344
| -75% | -$586K |
|
|
COOP
4522
CALL
DELISTED
Mr. Cooper
COOP
| $211K | ﹤0.01% |
68
-582
| -90% | -$14.9K |
|
4523
Canadian Solar
CSIQ
$932M
| $211K | ﹤0.01% |
4,118
-37,268
| -90% | -$1.53M |
|
|
ELME
4524
CALL
Elme Communities
ELME
$145M
| $211K | ﹤0.01% |
98
+75
| +326% | +$1.61K |
|
4525
PUT
FB Financial Corp
FBK
$2.98B
| $211K | ﹤0.01% |
61
+35
| +135% | +$1.1K |
|
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.