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 | |
|---|---|---|---|---|---|---|
3076
Ares Capital
ARCC
$13.5B
| $469K | ﹤0.01% |
33,627
-15,900
| -32% | -$226K |
|
3077
PUT
Futu Holdings
FUTU
$13.9B
| $469K | ﹤0.01% |
+164
| New | +$5.15K |
|
|
OPLN
3078
PUT
Openlane
OPLN
$4.17B
| $469K | ﹤0.01% |
326
+155
| +91% | +$2.42K |
|
3079
CALL
Alpha Pro Tech
APT
$50.4M
| $468K | ﹤0.01% |
317
-1,350
| -81% | -$22.9K |
|
3080
PUT
Arcturus Therapeutics
ARCT
$157M
| $467K | ﹤0.01% |
+109
| New | +$5.41K |
|
3081
PUT
Bloomin' Brands
BLMN
$680M
| $467K | ﹤0.01% |
306
+105
| +52% | +$1.36K |
|
3082
Omeros
OMER
$709M
| $467K | ﹤0.01% |
46,234
+32,723
| +242% | +$421K |
|
3083
CALL
SelectQuote
SLQT
$114M
| $467K | ﹤0.01% |
+231
| New | +$4.81K |
|
3084
ProShares UltraShort FTSE Europe
EPV
$11.6M
| $466K | ﹤0.01% |
4,143
+3,999
| +2,777% | +$446K |
|
3085
PUT
1-800-Flowers.com
FLWS
$245M
| $466K | ﹤0.01% |
187
+177
| +1,770% | +$4.68K |
|
3086
CALL
Wave Life Sciences
WVE
$1.12B
| $466K | ﹤0.01% |
550
+548
| +27,400% | +$6.01K |
|
|
MOBL
3087
PUT
DELISTED
MobileIron, Inc.
MOBL
| $466K | ﹤0.01% |
666
+629
| +1,700% | +$3.67K |
|
|
ARI
3088
PUT
Apollo Commercial Real Estate
ARI
$887M
| $465K | ﹤0.01% |
517
+233
| +82% | +$2.14K |
|
3089
BJ's Restaurants
BJRI
$1.41B
| $465K | ﹤0.01% |
15,800
-16,729
| -51% | -$431K |
|
3090
Direxion Daily S&P Biotech Bear 3X ETF
LABD
$66.7M
| $465K | ﹤0.01% |
781
+101
| +15% | +$65.2K |
|
|
SWCH
3091
PUT
DELISTED
Switch, Inc. Class A Common Stock
SWCH
| $465K | ﹤0.01% |
298
-254
| -46% | -$4.33K |
|
|
COHR
3092
CALL
DELISTED
Coherent Inc
COHR
| $465K | ﹤0.01% |
42
+5
| +14% | +$605 |
|
3093
Nektar Therapeutics
NKTR
$2.39B
| $464K | ﹤0.01% |
1,868
-167
| -8% | -$52.5K |
|
3094
United States Gasoline Fund
UGA
$148M
| $464K | ﹤0.01% |
23,333
-15,023
| -39% | -$297K |
|
|
3095
CALL
1-800-Flowers.com
FLWS
$245M
| $463K | ﹤0.01% |
186
-124
| -40% | -$3.28K |
|
3096
CALL
Greif
GEF
$4.47B
| $463K | ﹤0.01% |
128
-63
| -33% | -$2.32K |
|
3097
CALL
Coty
COTY
$2.33B
| $462K | ﹤0.01% |
1,714
+36
| +2% | +$136 |
|
3098
Plains GP Holdings
PAGP
$5.23B
| $462K | ﹤0.01% |
75,880
+29,379
| +63% | +$225K |
|
3099
CALL
Xcel Energy
XEL
$51B
| $462K | ﹤0.01% |
67
-260
| -80% | -$17.7K |
|
|
NEWR
3100
DELISTED
New Relic, Inc.
NEWR
| $462K | ﹤0.01% |
+8,205
| New | +$501K |
|
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.