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 | |
|---|---|---|---|---|---|---|
2726
JetBlue
JBLU
$1.96B
| $878K | ﹤0.01% |
60,413
-8,495
| -12% | -$117K |
|
2727
CALL
J.M. Smucker
SJM
$12.6B
| $878K | ﹤0.01% |
76
-57
| -43% | -$6.63K |
|
2728
PUT
Visteon
VC
$2.77B
| $878K | ﹤0.01% |
70
+41
| +141% | +$4.32K |
|
|
POLY
2729
CALL
DELISTED
Plantronics, Inc.
POLY
| $878K | ﹤0.01% |
325
+179
| +123% | +$3.93K |
|
2730
PUT
Spectrum Brands
SPB
$2.04B
| $876K | ﹤0.01% |
111
+18
| +19% | +$1.18K |
|
2731
PUT
Helmerich & Payne
HP
$3.53B
| $875K | ﹤0.01% |
378
-141
| -27% | -$2.73K |
|
2732
PUT
National Vision
EYE
$1.6B
| $874K | ﹤0.01% |
+193
| New | +$8.39K |
|
|
CGRO
2733
CALL
DELISTED
Collective Growth Corporation Class A Common Stock
CGRO
| $873K | ﹤0.01% |
+611
| New | +$6.65K |
|
2734
CALL
Clean Energy Fuels
CLNE
$447M
| $872K | ﹤0.01% |
1,110
+935
| +534% | +$3.65K |
|
2735
CALL
Lakeland Industries
LAKE
$106M
| $872K | ﹤0.01% |
320
+68
| +27% | +$1.54K |
|
2736
PUT
Gold Fields
GFI
$29.2B
| $871K | ﹤0.01% |
940
+171
| +22% | +$1.81K |
|
2737
Sprouts Farmers Market
SFM
$7.04B
| $870K | ﹤0.01% |
43,312
-11,321
| -21% | -$232K |
|
2738
Team
TISI
$77.7M
| $867K | ﹤0.01% |
7,961
+7,146
| +877% | +$588K |
|
2739
CALL
Ameren
AEE
$31.5B
| $866K | ﹤0.01% |
111
+99
| +825% | +$7.93K |
|
2740
CALL
Kinross Gold
KGC
$28.5B
| $866K | ﹤0.01% |
1,180
+318
| +37% | +$2.54K |
|
2741
CALL
Williams-Sonoma
WSM
$26.7B
| $865K | ﹤0.01% |
170
-330
| -66% | -$16.9K |
|
2742
CALL
Arcos Dorados Holdings
ARCO
$1.73B
| $863K | ﹤0.01% |
1,741
+1,627
| +1,427% | +$7.43K |
|
2743
CALL
Avnet
AVT
$7.33B
| $863K | ﹤0.01% |
246
-79
| -24% | -$2.34K |
|
2744
PUT
Tredegar Corp
TG
$268M
| $863K | ﹤0.01% |
+517
| New | +$8.69K |
|
2745
Waste Management
WM
$95.9B
| $863K | ﹤0.01% |
7,318
-14,708
| -67% | -$1.72M |
|
2746
CALL
Cohu
COHU
$2.39B
| $862K | ﹤0.01% |
226
+218
| +2,725% | +$5.95K |
|
2747
PUT
First American
FAF
$7.67B
| $862K | ﹤0.01% |
167
-210
| -56% | -$10.5K |
|
2748
Vulcan Materials
VMC
$36.3B
| $862K | ﹤0.01% |
5,816
+3,383
| +139% | +$482K |
|
2749
CALL
Liberty Latin America Class C
LILAK
$1.5B
| $861K | ﹤0.01% |
854
+137
| +19% | +$1.35K |
|
|
UNIT
2750
Uniti Group
UNIT
$2.63B
| $861K | ﹤0.01% |
73,423
-65,565
| -47% | -$683K |
|
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.