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 | |
|---|---|---|---|---|---|---|
|
SOHU
2926
Sohu.com
SOHU
$336M
| $532K | ﹤0.01% |
26,816
+10,411
| +63% | +$181K |
|
2927
PUT
AMN Healthcare
AMN
$1.28B
| $531K | ﹤0.01% |
91
+55
| +153% | +$2.9K |
|
2928
Protolabs
PRLB
$1.86B
| $531K | ﹤0.01% |
4,106
+1,209
| +42% | +$159K |
|
2929
PUT
Spectrum Brands
SPB
$2.04B
| $531K | ﹤0.01% |
93
+79
| +564% | +$4.33K |
|
2930
PUT
Viking Therapeutics
VKTX
$4.04B
| $530K | ﹤0.01% |
912
-84
| -8% | -$578 |
|
2931
Amplify Alternative Harvest ETF
MJ
$101M
| $529K | ﹤0.01% |
4,237
+2,802
| +195% | +$417K |
|
2932
Markel Group
MKL
$25B
| $529K | ﹤0.01% |
544
+374
| +220% | +$380K |
|
2933
PUT
Pluri
PLUR
$19.2M
| $529K | ﹤0.01% |
63
-219
| -78% | -$16.8K |
|
2934
J.M. Smucker
SJM
$12.6B
| $529K | ﹤0.01% |
+4,581
| New | +$511K |
|
2935
PUT
Carter's
CRI
$1.43B
| $528K | ﹤0.01% |
61
+35
| +135% | +$2.91K |
|
2936
CALL
Trinity Industries
TRN
$2.97B
| $528K | ﹤0.01% |
271
-285
| -51% | -$5.8K |
|
|
MOBL
2937
CALL
DELISTED
MobileIron, Inc.
MOBL
| $528K | ﹤0.01% |
754
-109
| -13% | -$637 |
|
2938
Ichor Holdings
ICHR
$3.02B
| $527K | ﹤0.01% |
+24,470
| New | +$650K |
|
2939
CALL
SiriusXM
SIRI
$10B
| $527K | ﹤0.01% |
98
-24
| -20% | -$1.38K |
|
2940
CALL
Teledyne Technologies
TDY
$30.4B
| $527K | ﹤0.01% |
17
| – | – |
|
2941
CALL
Energous
WATT
$80.3M
| $527K | ﹤0.01% |
3
+1
| +50% | +$1.96K |
|
2942
CALL
Ametek
AME
$55.5B
| $526K | ﹤0.01% |
53
-31
| -37% | -$3K |
|
2943
PUT
Leggett & Platt
LEG
$1.52B
| $526K | ﹤0.01% |
128
+1
| +0.8% | +$40 |
|
2944
CALL
Stratasys
SSYS
$697M
| $526K | ﹤0.01% |
422
-130
| -24% | -$1.9K |
|
2945
CALL
CoreCivic
CXW
$3.1B
| $524K | ﹤0.01% |
656
+189
| +40% | +$1.72K |
|
2946
CALL
JFrog
FROG
$9.71B
| $524K | ﹤0.01% |
+62
| New | +$4.62K |
|
2947
CALL
Nektar Therapeutics
NKTR
$2.39B
| $524K | ﹤0.01% |
21
-4
| -16% | -$1.26K |
|
2948
Annaly Capital Management
NLY
$16.9B
| $524K | ﹤0.01% |
18,401
+6,052
| +49% | +$175K |
|
2949
PUT
Perion Network
PERI
$367M
| $524K | ﹤0.01% |
751
+388
| +107% | +$2.32K |
|
|
SWN
2950
CALL
DELISTED
Southwestern Energy Company
SWN
| $522K | ﹤0.01% |
2,223
+256
| +13% | +$681 |
|
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.