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 | |
|---|---|---|---|---|---|---|
1576
PUT
Itaú Unibanco
ITUB
$91.3B
| $2.42M | ﹤0.01% |
5,473
-556
| -9% | -$2.08K |
|
|
TTM.RT
1577
CALL
DELISTED
TATA MOTORS LIMITED RT PUR ADR
TTM.RT
| $2.42M | ﹤0.01% |
1,920
-375
| -16% | -$472K |
|
1578
CALL
Ericsson
ERIC
$30.7B
| $2.41M | ﹤0.01% |
2,017
-952
| -32% | -$11.2K |
|
1579
CALL
Walker & Dunlop
WD
$1.65B
| $2.41M | ﹤0.01% |
262
+5
| +2% | +$371 |
|
1580
CALL
ScottsMiracle-Gro
SMG
$4.03B
| $2.41M | ﹤0.01% |
121
+46
| +61% | +$7.89K |
|
1581
CALL
Toll Brothers
TOL
$14B
| $2.41M | ﹤0.01% |
554
-312
| -36% | -$14.5K |
|
1582
CALL
Encompass Health
EHC
$11.2B
| $2.41M | ﹤0.01% |
366
+146
| +66% | +$8.59K |
|
1583
CALL
DXC Technology
DXC
$1.63B
| $2.4M | ﹤0.01% |
934
+30
| +3% | +$640 |
|
1584
CALL
Northern Trust
NTRS
$22.2B
| $2.4M | ﹤0.01% |
258
+159
| +161% | +$14K |
|
1585
CALL
Fair Isaac
FICO
$28.7B
| $2.4M | ﹤0.01% |
47
+35
| +292% | +$16.3K |
|
1586
CALL
Lamb Weston
LW
$6.85B
| $2.4M | ﹤0.01% |
305
+217
| +247% | +$15.8K |
|
1587
PUT
Herbalife
HLF
$1.23B
| $2.4M | ﹤0.01% |
499
-678
| -58% | -$32.7K |
|
1588
PUT
Magnite
MGNI
$2.65B
| $2.4M | ﹤0.01% |
780
+738
| +1,757% | +$11.2K |
|
1589
Invesco CurrencyShares Swiss Franc Trust
FXF
$409M
| $2.39M | ﹤0.01% |
+23,251
| New | +$2.35M |
|
1590
CALL
Fortive
FTV
$19B
| $2.39M | ﹤0.01% |
456
-20
| -4% | -$1.03K |
|
|
KSU
1591
CALL
DELISTED
Kansas City Southern
KSU
| $2.39M | ﹤0.01% |
117
-397
| -77% | -$74.6K |
|
|
KL
1592
DELISTED
Kirkland Lake Gold Ltd Ordinary
KL
| $2.38M | ﹤0.01% |
57,706
+22,514
| +64% | +$999K |
|
1593
CALL
3D Systems Corp
DDD
$420M
| $2.38M | ﹤0.01% |
2,271
+1,235
| +119% | +$10K |
|
|
SAGE
1594
CALL
DELISTED
Sage Therapeutics
SAGE
| $2.38M | ﹤0.01% |
275
-187
| -40% | -$13.8K |
|
|
RIDE
1595
CALL
DELISTED
Lordstown Motors Corp. Class A Common Stock
RIDE
| $2.38M | ﹤0.01% |
79
+60
| +316% | +$18.9K |
|
1596
CALL
Rush Street Interactive
RSI
$3.24B
| $2.38M | ﹤0.01% |
1,098
+882
| +408% | +$13.2K |
|
|
NNDM
1597
PUT
Nano Dimension
NNDM
$309M
| $2.38M | ﹤0.01% |
+2,611
| New | +$13.2K |
|
1598
AngloGold Ashanti
AU
$40.3B
| $2.37M | ﹤0.01% |
104,962
+25,149
| +32% | +$603K |
|
1599
PUT
Bunge Global
BG
$23.6B
| $2.37M | ﹤0.01% |
362
-114
| -24% | -$6.65K |
|
1600
PUT
Xcel Energy
XEL
$51B
| $2.37M | ﹤0.01% |
356
+209
| +142% | +$14.6K |
|
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.