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 | |
|---|---|---|---|---|---|---|
1751
Invesco WilderHill Clean Energy ETF
PBW
$390M
| $2.06M | ﹤0.01% |
19,952
+17,654
| +768% | +$1.43M |
|
1752
ARK Autonomous Technology & Robotics ETF
ARKQ
$1.88B
| $2.06M | ﹤0.01% |
26,978
+17,396
| +182% | +$1.15M |
|
1753
CALL
APA Corp
APA
$12.8B
| $2.06M | ﹤0.01% |
1,450
-6,128
| -81% | -$71.3K |
|
1754
PUT
Enbridge
ENB
$124B
| $2.06M | ﹤0.01% |
643
+157
| +32% | +$4.78K |
|
1755
Flex
FLEX
$43.4B
| $2.05M | ﹤0.01% |
151,504
+135,101
| +824% | +$1.56M |
|
1756
PUT
Campbell Soup
CPB
$6.51B
| $2.04M | ﹤0.01% |
423
-946
| -69% | -$45.7K |
|
1757
PUT
FirstEnergy
FE
$28.9B
| $2.04M | ﹤0.01% |
668
-531
| -44% | -$15.9K |
|
1758
American Water Works
AWK
$26.3B
| $2.04M | ﹤0.01% |
13,312
+2,830
| +27% | +$436K |
|
1759
CALL
Kodiak Sciences
KOD
$2.59B
| $2.04M | ﹤0.01% |
139
+87
| +167% | +$9.7K |
|
1760
CALL
Itaú Unibanco
ITUB
$91.3B
| $2.04M | ﹤0.01% |
4,608
+166
| +4% | +$621 |
|
1761
iShares MSCI Singapore ETF
EWS
$1.01B
| $2.04M | ﹤0.01% |
94,992
+69,695
| +276% | +$1.42M |
|
1762
CALL
Vipshop
VIPS
$6.84B
| $2.04M | ﹤0.01% |
726
-76
| -9% | -$1.69K |
|
1763
CALL
Canadian Natural Resources
CNQ
$96.9B
| $2.04M | ﹤0.01% |
1,732
+1,179
| +213% | +$11.8K |
|
|
ZNGA
1764
PUT
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
| $2.04M | ﹤0.01% |
2,066
-589
| -22% | -$5.3K |
|
1765
PUT
Exelixis
EXEL
$13.9B
| $2.03M | ﹤0.01% |
1,013
+329
| +48% | +$6.89K |
|
1766
CALL
Johnson Controls International
JCI
$87.5B
| $2.03M | ﹤0.01% |
436
+86
| +25% | +$3.82K |
|
1767
PUT
Factset
FDS
$9.05B
| $2.03M | ﹤0.01% |
61
+43
| +239% | +$14.2K |
|
|
KRA
1768
DELISTED
Kraton Corporation
KRA
| $2.03M | ﹤0.01% |
+72,906
| New | +$1.97M |
|
|
OPTU
1769
CALL
Optimum Communications Inc
OPTU
$316M
| $2.02M | ﹤0.01% |
534
-123
| -19% | -$3.85K |
|
1770
CALL
Lindblad Expeditions
LIND
$1.76B
| $2.02M | ﹤0.01% |
1,180
+1,176
| +29,400% | +$13.5K |
|
1771
Arrowhead Research
ARWR
$12.1B
| $2.02M | ﹤0.01% |
26,313
-17,101
| -39% | -$1.09M |
|
1772
PUT
CryoPort
CYRX
$775M
| $2.01M | ﹤0.01% |
458
+64
| +16% | +$3.05K |
|
1773
CALL
Entegris
ENTG
$19.7B
| $2.01M | ﹤0.01% |
209
-57
| -21% | -$4.98K |
|
1774
PUT
LyondellBasell Industries
LYB
$19.5B
| $2.01M | ﹤0.01% |
219
+39
| +22% | +$3.18K |
|
1775
PUT
Lakeland Industries
LAKE
$106M
| $2M | ﹤0.01% |
736
+201
| +38% | +$4.54K |
|
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.