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 | |
|---|---|---|---|---|---|---|
1426
CALL
Hewlett Packard
HPE
$63.2B
| $2.88M | ﹤0.01% |
2,427
+449
| +23% | +$4.71K |
|
1427
CALL
Vroom Inc
VRM
$36.9M
| $2.87M | ﹤0.01% |
9
-1
| -10% | -$3.3K |
|
1428
PUT
Invesco Equal Weight 0-30 Year Treasury ETF
GOVI
$1.22B
| $2.87M | ﹤0.01% |
541
-226
| -29% | -$8.73K |
|
1429
PUT
Bread Financial
BFH
$4.21B
| $2.87M | ﹤0.01% |
485
-370
| -43% | -$18.6K |
|
1430
Calix
CALX
$2.3B
| $2.87M | ﹤0.01% |
96,312
+82,286
| +587% | +$2.03M |
|
1431
CALL
Manulife Financial
MFC
$72.6B
| $2.87M | ﹤0.01% |
1,608
+1,485
| +1,207% | +$23.7K |
|
|
BERY
1432
CALL
DELISTED
Berry Global Group, Inc.
BERY
| $2.87M | ﹤0.01% |
555
+46
| +9% | +$2.19K |
|
1433
McKesson
MCK
$98.5B
| $2.86M | ﹤0.01% |
16,473
+4,397
| +36% | +$732K |
|
1434
Union Pacific
UNP
$182B
| $2.86M | ﹤0.01% |
13,723
+9,551
| +229% | +$1.91M |
|
1435
PUT
Vodafone
VOD
$34.9B
| $2.85M | ﹤0.01% |
1,733
+731
| +73% | +$11.4K |
|
|
FRC
1436
PUT
DELISTED
First Republic Bank
FRC
| $2.85M | ﹤0.01% |
194
-50
| -20% | -$6.51K |
|
1437
CALL
Abercrombie & Fitch
ANF
$4.17B
| $2.84M | ﹤0.01% |
1,396
+750
| +116% | +$13.7K |
|
1438
Ventas
VTR
$48.9B
| $2.84M | ﹤0.01% |
57,923
+11,208
| +24% | +$518K |
|
1439
CALL
AGNC Investment
AGNC
$12.3B
| $2.84M | ﹤0.01% |
1,819
-5,224
| -74% | -$77.3K |
|
1440
CALL
Upwork
UPWK
$1.09B
| $2.84M | ﹤0.01% |
822
-39
| -5% | -$1.11K |
|
1441
CALL
America Movil
AMX
$78.1B
| $2.83M | ﹤0.01% |
1,950
+342
| +21% | +$4.64K |
|
|
IPG
1442
CALL
DELISTED
Interpublic Group of Companies
IPG
| $2.83M | ﹤0.01% |
1,204
+365
| +44% | +$7.66K |
|
|
HOUS
1443
PUT
DELISTED
Anywhere Real Estate
HOUS
| $2.83M | ﹤0.01% |
2,156
+1,279
| +146% | +$15.3K |
|
1444
CALL
Gogo Inc
GOGO
$515M
| $2.83M | ﹤0.01% |
2,935
+168
| +6% | +$1.66K |
|
|
GTM
1445
CALL
ZoomInfo Technologies
GTM
$861M
| $2.83M | ﹤0.01% |
586
+385
| +192% | +$16.6K |
|
|
NIU
1446
CALL
Niu Technologies
NIU
$202M
| $2.82M | ﹤0.01% |
1,007
+1,006
| +100,600% | +$29.2K |
|
1447
PUT
Arrowhead Research
ARWR
$12.1B
| $2.82M | ﹤0.01% |
368
-95
| -21% | -$6.08K |
|
1448
CALL
Bank of Montreal
BMO
$125B
| $2.81M | ﹤0.01% |
370
+332
| +874% | +$22.7K |
|
|
AMRS
1449
DELISTED
Amyris Inc.
AMRS
| $2.81M | ﹤0.01% |
+455,286
| New | +$1.46M |
|
1450
Kinross Gold
KGC
$28.5B
| $2.8M | ﹤0.01% |
381,586
+208,216
| +120% | +$1.66M |
|
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.