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 | |
|---|---|---|---|---|---|---|
2501
PUT
Eversource Energy
ES
$28.2B
| $1.05M | ﹤0.01% |
121
+27
| +29% | +$2.4K |
|
2502
PUT
Federal Realty Investment Trust
FRT
$10.9B
| $1.05M | ﹤0.01% |
123
+79
| +180% | +$6.57K |
|
2503
Invesco DB US Dollar Index Bullish Fund
UUP
$434M
| $1.05M | ﹤0.01% |
+43,168
| New | +$1.07M |
|
2504
Quanta Services
PWR
$93.9B
| $1.04M | ﹤0.01% |
+14,520
| New | +$957K |
|
2505
CALL
Rayonier
RYN
$6.49B
| $1.04M | ﹤0.01% |
392
+232
| +145% | +$5.92K |
|
2506
CALL
Regency Centers
REG
$15B
| $1.04M | ﹤0.01% |
229
+224
| +4,480% | +$9.63K |
|
2507
CALL
Utz Brands
UTZ
$1.25B
| $1.04M | ﹤0.01% |
473
-216
| -31% | -$4.11K |
|
|
CPE
2508
PUT
DELISTED
Callon Petroleum Company
CPE
| $1.04M | ﹤0.01% |
794
+468
| +144% | +$4.04K |
|
2509
CALL
Cogent Communications
CCOI
$594M
| $1.04M | ﹤0.01% |
174
+139
| +397% | +$8.22K |
|
2510
CALL
Equifax
EFX
$20.3B
| $1.04M | ﹤0.01% |
54
+5
| +10% | +$841 |
|
2511
Aecom
ACM
$9.07B
| $1.04M | ﹤0.01% |
20,895
-26,097
| -56% | -$1.25M |
|
2512
Campbell Soup
CPB
$6.51B
| $1.04M | ﹤0.01% |
21,511
-586
| -3% | -$28.3K |
|
2513
PUT
Ionis Pharmaceuticals
IONS
$9.35B
| $1.04M | ﹤0.01% |
184
+12
| +7% | +$598 |
|
2514
CALL
BridgeBio Pharma
BBIO
$16.5B
| $1.04M | ﹤0.01% |
+146
| New | +$7.04K |
|
2515
Motorola Solutions
MSI
$69.4B
| $1.04M | ﹤0.01% |
+6,107
| New | +$1.02M |
|
|
GNOG
2516
CALL
DELISTED
Golden Nugget Online Gaming, Inc. Class A Common Stock
GNOG
| $1.04M | ﹤0.01% |
527
-218
| -29% | -$3.69K |
|
2517
Wynn Resorts
WYNN
$10.1B
| $1.04M | ﹤0.01% |
9,192
-163,771
| -95% | -$15.1M |
|
|
ENDP
2518
CALL
DELISTED
Endo International plc
ENDP
| $1.04M | ﹤0.01% |
1,445
-526
| -27% | -$2.74K |
|
2519
CALL
Liberty Global Class C
LBTYK
$3.27B
| $1.04M | ﹤0.01% |
432
-975
| -69% | -$21.1K |
|
2520
CALL
Huntington Bancshares
HBAN
$35.1B
| $1.03M | ﹤0.01% |
819
-84
| -9% | -$955 |
|
2521
CALL
Opko Health
OPK
$921M
| $1.03M | ﹤0.01% |
2,618
-1,563
| -37% | -$6.53K |
|
2522
Verisk Analytics
VRSK
$26.4B
| $1.03M | ﹤0.01% |
+4,981
| New | +$968K |
|
|
MIME
2523
CALL
DELISTED
Mimecast Limited
MIME
| $1.03M | ﹤0.01% |
182
+152
| +507% | +$7.03K |
|
2524
ProShares UltraPro Short Dow 30
SDOW
$171M
| $1.03M | ﹤0.01% |
5,064
-2,332
| -32% | -$573K |
|
|
CNH
2525
CALL
CNH Industrial
CNH
$13.8B
| $1.03M | ﹤0.01% |
925
-871
| -48% | -$7.58K |
|
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.