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 | |
|---|---|---|---|---|---|---|
|
GAN
2876
CALL
DELISTED
GAN Ltd
GAN
| $774K | ﹤0.01% |
382
-219
| -36% | -$3.67K |
|
2877
PUT
Actinium Pharmaceuticals
ATNM
$27M
| $772K | ﹤0.01% |
991
+983
| +12,288% | +$10.7K |
|
2878
PUT
Liberty Media Series A
FWONA
$22.3B
| $772K | ﹤0.01% |
307
+67
| +28% | +$2.34K |
|
2879
PUT
Kirby Corp
KEX
$7.95B
| $772K | ﹤0.01% |
149
-27
| -15% | -$1.23K |
|
|
BEAT
2880
PUT
DELISTED
BioTelemetry, Inc.
BEAT
| $771K | ﹤0.01% |
107
+12
| +13% | +$628 |
|
2881
PUT
Pentair
PNR
$10.2B
| $769K | ﹤0.01% |
145
+97
| +202% | +$4.97K |
|
|
CERN
2882
PUT
DELISTED
Cerner Corp
CERN
| $769K | ﹤0.01% |
98
-1,168
| -92% | -$86.6K |
|
|
GNOG
2883
DELISTED
Golden Nugget Online Gaming, Inc. Class A Common Stock
GNOG
| $769K | ﹤0.01% |
39,065
-84,152
| -68% | -$1.42M |
|
2884
Tenaris
TS
$29.1B
| $768K | ﹤0.01% |
+48,184
| New | +$642K |
|
2885
EPR Properties
EPR
$4.86B
| $767K | ﹤0.01% |
+23,604
| New | +$694K |
|
|
ATSG
2886
PUT
DELISTED
Air Transport Services Group
ATSG
| $767K | ﹤0.01% |
245
+121
| +98% | +$3.53K |
|
|
RUTH
2887
CALL
DELISTED
Ruth's Hospitality Group, Inc.
RUTH
| $767K | ﹤0.01% |
433
+266
| +159% | +$3.74K |
|
2888
PUT
Broadridge
BR
$17.2B
| $766K | ﹤0.01% |
50
+21
| +72% | +$3.05K |
|
2889
CALL
HealthEquity
HQY
$7.91B
| $766K | ﹤0.01% |
110
-168
| -60% | -$10.4K |
|
|
LTC
2890
CALL
LTC Properties
LTC
$2.16B
| $766K | ﹤0.01% |
197
+65
| +49% | +$2.39K |
|
2891
Lamb Weston
LW
$6.82B
| $766K | ﹤0.01% |
9,729
+4,822
| +98% | +$351K |
|
2892
CALL
Upland Software
UPLD
$12M
| $766K | ﹤0.01% |
17
-18
| -51% | -$7.93K |
|
|
TCF
2893
DELISTED
TCF Financial Corporation Common Stock
TCF
| $766K | ﹤0.01% |
20,706
+20,098
| +3,306% | +$639K |
|
2894
CALL
Cal-Maine
CALM
$4.28B
| $765K | ﹤0.01% |
204
+114
| +127% | +$4.39K |
|
2895
Clean Energy Fuels
CLNE
$447M
| $764K | ﹤0.01% |
97,294
+24,335
| +33% | +$94.9K |
|
2896
PUT
Highwoods Properties
HIW
$3.71B
| $764K | ﹤0.01% |
193
-59
| -23% | -$2.13K |
|
|
BEAT
2897
CALL
DELISTED
BioTelemetry, Inc.
BEAT
| $764K | ﹤0.01% |
106
+78
| +279% | +$4.08K |
|
2898
Alcoa
AA
$11.7B
| $763K | ﹤0.01% |
33,102
-39,403
| -54% | -$686K |
|
|
FUV
2899
CALL
DELISTED
Arcimoto, Inc. Common Stock
FUV
| $762K | ﹤0.01% |
29
+19
| +190% | +$3.71K |
|
2900
CALL
Viking Therapeutics
VKTX
$4.04B
| $761K | ﹤0.01% |
1,353
-764
| -36% | -$4.63K |
|
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.