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 | |
|---|---|---|---|---|---|---|
2976
CALL
3D Systems Corp
DDD
$420M
| $508K | ﹤0.01% |
1,036
+140
| +16% | +$829 |
|
|
CEO
2977
DELISTED
CNOOC Limited
CEO
| $508K | ﹤0.01% |
+5,292
| New | +$582K |
|
2978
PUT
PBF Energy
PBF
$7.29B
| $507K | ﹤0.01% |
892
+380
| +74% | +$3.15K |
|
2979
AMC Global Media
AMCX
$430M
| $506K | ﹤0.01% |
20,480
+15,477
| +309% | +$372K |
|
2980
PUT
Alpha Pro Tech
APT
$50.4M
| $506K | ﹤0.01% |
343
-1,104
| -76% | -$18.7K |
|
2981
Becton Dickinson
BDX
$43.1B
| $505K | ﹤0.01% |
+2,226
| New | +$547K |
|
2982
ScottsMiracle-Gro
SMG
$4.03B
| $505K | ﹤0.01% |
3,308
+790
| +31% | +$122K |
|
2983
PUT
ProShares UltraShort Industrials
SIJ
$5.74M
| $504K | ﹤0.01% |
30
+22
| +275% | +$2.69K |
|
2984
PUT
Prospect Capital
PSEC
$1.06B
| $503K | ﹤0.01% |
1,001
+67
| +7% | +$337 |
|
2985
Alarm.com
ALRM
$2.56B
| $501K | ﹤0.01% |
+9,085
| New | +$562K |
|
2986
CALL
Harmony Gold Mining
HMY
$9.92B
| $501K | ﹤0.01% |
951
-7
| -0.7% | -$42 |
|
|
LNW
2987
DELISTED
Light & Wonder
LNW
| $501K | ﹤0.01% |
14,379
+3,858
| +37% | +$82.7K |
|
2988
Vanguard Real Estate ETF
VNQ
$39.9B
| $501K | ﹤0.01% |
+6,357
| New | +$510K |
|
2989
PUT
Assured Guaranty
AGO
$3.78B
| $500K | ﹤0.01% |
233
-55
| -19% | -$1.21K |
|
2990
CALL
Cars.com
CARS
$641M
| $500K | ﹤0.01% |
619
+73
| +13% | +$566 |
|
|
CALY
2991
Callaway Golf Company
CALY
$3.26B
| $500K | ﹤0.01% |
26,141
+21,952
| +524% | +$412K |
|
2992
Tilray
TLRY
$479M
| $500K | ﹤0.01% |
+10,328
| New | +$690K |
|
2993
Brown-Forman Class B
BF.B
$12B
| $499K | ﹤0.01% |
6,635
+5,714
| +620% | +$409K |
|
2994
CALL
Pampa Energía
PAM
$4.64B
| $499K | ﹤0.01% |
484
+119
| +33% | +$1.34K |
|
2995
CALL
RTX Corp
RTX
$287B
| $499K | ﹤0.01% |
7,543
+1,934
| +34% | +$118K |
|
|
APHA
2996
CALL
DELISTED
Aphria Inc. Common Shares
APHA
| $499K | ﹤0.01% |
1,127
-267
| -19% | -$1.25K |
|
|
CCMP
2997
PUT
DELISTED
CMC Materials, Inc. Common Stock
CCMP
| $499K | ﹤0.01% |
35
-81
| -70% | -$12.1K |
|
2998
CALL
Lakeland Industries
LAKE
$106M
| $498K | ﹤0.01% |
252
-124
| -33% | -$2.71K |
|
2999
RB Global
RBA
$20.8B
| $498K | ﹤0.01% |
8,414
+8,399
| +55,993% | +$443K |
|
|
ATCO
3000
CALL
DELISTED
Atlas Corp.
ATCO
| $498K | ﹤0.01% |
558
+145
| +35% | +$1.18K |
|
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.