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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$27.8M |
| 3 |
JPMorgan Chase
JPM
|
+$22.4M |
| 4 |
Boeing
BA
|
+$19.4M |
| 5 |
ExxonMobil
XOM
|
+$14.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$95.5M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$79.6M |
| 3 |
Tesla
TSLA
|
+$75.3M |
| 4 |
NVIDIA
NVDA
|
+$51.6M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.53% |
| 2 | Technology | 0.4% |
| 3 | Healthcare | 0.22% |
| 4 | Financials | 0.21% |
| 5 | Communication Services | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2076
PUT
Regal Rexnord
RRX
$14.2B
| $1.15M | ﹤0.01% |
122
+119
| +3,967% | +$11.3K |
|
2077
PUT
Universal Health Services
UHS
$9.43B
| $1.15M | ﹤0.01% |
107
-201
| -65% | -$21.5K |
|
2078
PUT
Carlyle Group
CG
$16.3B
| $1.14M | ﹤0.01% |
464
+60
| +15% | +$1.62K |
|
2079
EPAM Systems
EPAM
$4.69B
| $1.14M | ﹤0.01% |
3,540
+2,420
| +216% | +$723K |
|
2080
Sprouts Farmers Market
SFM
$7.04B
| $1.14M | ﹤0.01% |
+54,633
| New | +$1.31M |
|
|
PE
2081
PUT
DELISTED
PARSLEY ENERGY INC
PE
| $1.14M | ﹤0.01% |
1,221
-363
| -23% | -$3.88K |
|
2082
CALL
Shift4
FOUR
$3.84B
| $1.14M | ﹤0.01% |
+236
| New | +$10.5K |
|
2083
PUT
Idexx Laboratories
IDXX
$42.9B
| $1.14M | ﹤0.01% |
29
-123
| -81% | -$45.5K |
|
2084
PUT
Rithm Capital
RITM
$5.09B
| $1.14M | ﹤0.01% |
1,434
+69
| +5% | +$531 |
|
|
BECN
2085
CALL
DELISTED
Beacon Roofing Supply, Inc.
BECN
| $1.14M | ﹤0.01% |
367
+169
| +85% | +$5.1K |
|
2086
Vipshop
VIPS
$6.84B
| $1.14M | ﹤0.01% |
+72,885
| New | +$1.43M |
|
2087
Madrigal Pharmaceuticals
MDGL
$12.6B
| $1.14M | ﹤0.01% |
9,589
-20,347
| -68% | -$2.21M |
|
2088
PUT
Pitney Bowes
PBI
$2.42B
| $1.14M | ﹤0.01% |
2,144
+1,727
| +414% | +$7.97K |
|
2089
CALL
Encompass Health
EHC
$11.2B
| $1.14M | ﹤0.01% |
220
-348
| -61% | -$17.9K |
|
2090
PUT
Stride
LRN
$3.69B
| $1.14M | ﹤0.01% |
432
-117
| -21% | -$4.53K |
|
|
MPT
2091
PUT
Medical Properties Trust
MPT
$2.89B
| $1.14M | ﹤0.01% |
645
+372
| +136% | +$6.92K |
|
2092
ARK Genomic Revolution ETF
ARKG
$1.51B
| $1.14M | ﹤0.01% |
+17,841
| New | +$1.05M |
|
2093
PUT
Cytokinetics
CYTK
$11B
| $1.14M | ﹤0.01% |
525
+128
| +32% | +$2.99K |
|
|
MOMO
2094
Hello Group
MOMO
$869M
| $1.14M | ﹤0.01% |
82,563
-97,848
| -54% | -$1.78M |
|
|
AL
2095
CALL
DELISTED
Air Lease Corp
AL
| $1.14M | ﹤0.01% |
386
+62
| +19% | +$1.83K |
|
2096
iShares MSCI Mexico ETF
EWW
$1.89B
| $1.14M | ﹤0.01% |
+34,027
| New | +$1.12M |
|
2097
Snowflake
SNOW
$92.9B
| $1.14M | ﹤0.01% |
+4,525
| New | +$1.08M |
|
2098
PUT
Henry Schein
HSIC
$9.74B
| $1.13M | ﹤0.01% |
193
+53
| +38% | +$3.4K |
|
2099
PUT
Unilever
UL
$131B
| $1.13M | ﹤0.01% |
164
-181
| -52% | -$12.1K |
|
|
MIC
2100
PUT
DELISTED
Macquarie Infrastructure Holdings, LLC
MIC
| $1.13M | ﹤0.01% |
422
-200
| -32% | -$5.79K |
|
Similar funds
Simplex Trading's Q3 2020 Portfolio in Review
As of Q3 2020, Simplex Trading held 9,056 positions worth $73.5B, up 17% from $62.7B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q3 2020 filing shows 1,403 new, 3,135 increased, 3,122 reduced and 1,191 closed positions. Its largest new stake was Goldman Sachs: 60,397 shares worth $12.1M. The largest sale was SPDR Gold Trust, an estimated $95.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.53% of assets, up from 0.47% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q3 2020 buy was Goldman Sachs: 60,397 shares worth $12.1M.
- Simplex Trading added most to Amazon in Q3 2020, an estimated $102M increase.
- Simplex Trading's biggest Q3 2020 reduction was SPDR Gold Trust, cutting an estimated $95.5M.
- Simplex Trading fully exited iShares MSCI EAFE ETF in Q3 2020, selling an estimated $40.5M.
- Simplex Trading's ten largest holdings make up 43% of its $73.5B portfolio in Q3 2020.
- Simplex Trading opened 1,403 new positions and closed 1,191 in Q3 2020.
- Simplex Trading's portfolio value rose 17% quarter-over-quarter to $73.5B.
Based on Simplex Trading's 13F filing for Q3 2020, filed 14 Oct 2020.