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 | |
|---|---|---|---|---|---|---|
|
ROIC
1676
CALL
DELISTED
Retail Opportunity Investments Corp.
ROIC
| $2.22M | ﹤0.01% |
1,655
+1,617
| +4,255% | +$19.8K |
|
|
INFO
1677
CALL
DELISTED
IHS Markit Ltd. Common Shares
INFO
| $2.21M | ﹤0.01% |
246
-184
| -43% | -$15.9K |
|
|
PPLI
1678
People Inc
PPLI
$3.1B
| $2.21M | ﹤0.01% |
21,372
-14,507
| -40% | -$1.11M |
|
1679
CALL
JetBlue
JBLU
$1.96B
| $2.2M | ﹤0.01% |
1,516
+224
| +17% | +$3.07K |
|
|
MRO
1680
PUT
DELISTED
Marathon Oil Corporation
MRO
| $2.2M | ﹤0.01% |
3,303
-843
| -20% | -$4.53K |
|
1681
PUT
Gogo Inc
GOGO
$515M
| $2.2M | ﹤0.01% |
2,286
+458
| +25% | +$4.54K |
|
1682
PUT
Guidewire Software
GWRE
$11.5B
| $2.2M | ﹤0.01% |
171
-120
| -41% | -$13.7K |
|
1683
American International
AIG
$41.9B
| $2.2M | ﹤0.01% |
58,085
-127,462
| -69% | -$4.49M |
|
1684
CALL
Levi Strauss
LEVI
$9.44B
| $2.2M | ﹤0.01% |
1,095
+524
| +92% | +$9.37K |
|
1685
PUT
Roper Technologies
ROP
$36.3B
| $2.2M | ﹤0.01% |
51
-17
| -25% | -$6.98K |
|
|
HPP
1686
PUT
Hudson Pacific Properties
HPP
$834M
| $2.19M | ﹤0.01% |
130
+46
| +55% | +$7.59K |
|
1687
Invesco CurrencyShares British Pound Sterling Trust
FXB
$76.9M
| $2.19M | ﹤0.01% |
16,593
+808
| +5% | +$103K |
|
|
AMRS
1688
PUT
DELISTED
Amyris Inc.
AMRS
| $2.19M | ﹤0.01% |
3,545
+3,084
| +669% | +$9.86K |
|
1689
PUT
BlackBerry
BB
$5.01B
| $2.19M | ﹤0.01% |
3,296
-73
| -2% | -$432 |
|
1690
PUT
8x8 Inc
EGHT
$247M
| $2.19M | ﹤0.01% |
634
+404
| +176% | +$8.66K |
|
|
UPH
1691
CALL
DELISTED
UpHealth, Inc.
UPH
| $2.18M | ﹤0.01% |
+199
| New | +$20.5K |
|
1692
CALL
argenx
ARGX
$57.4B
| $2.18M | ﹤0.01% |
74
-45
| -38% | -$12.4K |
|
|
BFX
1693
PUT
DELISTED
BowFlex Inc.
BFX
| $2.17M | ﹤0.01% |
1,198
+758
| +172% | +$15.8K |
|
|
CEO
1694
PUT
DELISTED
CNOOC Limited
CEO
| $2.17M | ﹤0.01% |
237
+86
| +57% | +$8.5K |
|
1695
CALL
Eldorado Gold
EGO
$8.31B
| $2.17M | ﹤0.01% |
1,635
-443
| -21% | -$5.68K |
|
1696
CALL
Ameresco
AMRC
$1.15B
| $2.17M | ﹤0.01% |
415
+384
| +1,239% | +$16.5K |
|
1697
Vroom Inc
VRM
$36.9M
| $2.17M | ﹤0.01% |
661
+229
| +53% | +$756K |
|
|
TTM.RT
1698
PUT
DELISTED
TATA MOTORS LIMITED RT PUR ADR
TTM.RT
| $2.17M | ﹤0.01% |
1,720
+245
| +17% | +$309K |
|
1699
PUT
Autoliv
ALV
$8.6B
| $2.16M | ﹤0.01% |
235
+216
| +1,137% | +$18.7K |
|
1700
CALL
Open Text
OTEX
$5.43B
| $2.16M | ﹤0.01% |
476
+172
| +57% | +$7.35K |
|
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.