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 | |
|---|---|---|---|---|---|---|
|
SBNY
1651
DELISTED
Signature Bank
SBNY
| $2.26M | ﹤0.01% |
+16,707
| New | +$1.75M |
|
1652
Avis
CAR
$5.63B
| $2.26M | ﹤0.01% |
60,525
+48,056
| +385% | +$1.69M |
|
1653
CALL
Globus Medical
GMED
$10.4B
| $2.26M | ﹤0.01% |
346
+19
| +6% | +$1.09K |
|
|
SRNE
1654
PUT
DELISTED
Sorrento Therapeutics, Inc.
SRNE
| $2.26M | ﹤0.01% |
3,306
-908
| -22% | -$7.29K |
|
1655
PUT
Guardant Health
GH
$19.5B
| $2.25M | ﹤0.01% |
175
-349
| -67% | -$40.2K |
|
1656
CALL
Butterfly Network
BFLY
$1.72B
| $2.25M | ﹤0.01% |
+1,139
| New | +$14.6K |
|
1657
CALL
Dave & Buster's
PLAY
$343M
| $2.25M | ﹤0.01% |
751
-844
| -53% | -$18.8K |
|
1658
CALL
Wingstop
WING
$3.68B
| $2.25M | ﹤0.01% |
170
-41
| -19% | -$5.35K |
|
1659
CALL
Neurocrine Biosciences
NBIX
$17.7B
| $2.25M | ﹤0.01% |
235
+23
| +11% | +$2.22K |
|
1660
CALL
Antero Resources
AR
$10.9B
| $2.25M | ﹤0.01% |
4,130
-1,088
| -21% | -$4.46K |
|
1661
L3Harris
LHX
$55.9B
| $2.25M | ﹤0.01% |
11,894
-3,012
| -20% | -$551K |
|
1662
Capri Holdings
CPRI
$1.77B
| $2.25M | ﹤0.01% |
+53,495
| New | +$1.64M |
|
1663
CALL
LendingTree
TREE
$544M
| $2.25M | ﹤0.01% |
82
+79
| +2,633% | +$23.5K |
|
|
QIWI
1664
DELISTED
QIWI PLC
QIWI
| $2.24M | ﹤0.01% |
217,642
+163,140
| +299% | +$2.36M |
|
1665
CALL
Expeditors International
EXPD
$22.9B
| $2.23M | ﹤0.01% |
235
+80
| +52% | +$7.29K |
|
1666
PUT
HP
HPQ
$23.5B
| $2.23M | ﹤0.01% |
909
-1,307
| -59% | -$27.4K |
|
1667
PUT
Equinox Gold
EQX
$7.32B
| $2.23M | ﹤0.01% |
2,161
+979
| +83% | +$10.7K |
|
1668
CALL
Ares Capital
ARCC
$13.5B
| $2.23M | ﹤0.01% |
1,321
+648
| +96% | +$10K |
|
|
FLIR
1669
PUT
DELISTED
FLIR Systems, Inc. (DE) Common Stock
FLIR
| $2.23M | ﹤0.01% |
509
+40
| +9% | +$1.54K |
|
1670
PUT
AvalonBay Communities
AVB
$27.1B
| $2.23M | ﹤0.01% |
139
+107
| +334% | +$17K |
|
1671
PUT
Cameco
CCJ
$38.3B
| $2.23M | ﹤0.01% |
1,663
+508
| +44% | +$5.43K |
|
1672
CALL
Citizens Financial Group
CFG
$30.4B
| $2.23M | ﹤0.01% |
623
-314
| -34% | -$9.85K |
|
|
STOR
1673
PUT
DELISTED
STORE Capital Corporation
STOR
| $2.22M | ﹤0.01% |
654
+327
| +100% | +$9.94K |
|
1674
iShares Russell 1000 Value ETF
IWD
$82B
| $2.22M | ﹤0.01% |
16,225
-6,446
| -28% | -$827K |
|
|
BKI
1675
PUT
DELISTED
Black Knight, Inc. Common Stock
BKI
| $2.22M | ﹤0.01% |
+251
| New | +$22.8K |
|
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.