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Simplex Trading

Simplex Trading Portfolio holdings

AUM $149B
1-Year Est. Return 62.07%
 

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.

This Fund
S&P 500
This Quarter Est. Return
+12.69%
1 Year Est. Return
+62.07%
3 Year Est. Return
+116.86%
5 Year Est. Return
+116.02%
10 Year Est. Return
+774.44%
AUM
$73.5B
AUM Growth
+$10.8B
Cap. Flow
-$1.16B
Cap. Flow %
-1.58%
Top 10 Hldgs %
42.78%
Holding
9,056
New
1,403
Increased
3,135
Reduced
3,122
Closed
1,191

Top Buys

Rank Stock Value
1
AMZN icon
Amazon
AMZN
+$102M
2
TSM icon
TSMC
TSM
+$27.8M
3
JPM icon
JPMorgan Chase
JPM
+$22.4M
4
BA icon
Boeing
BA
+$19.4M
5
XOM icon
ExxonMobil
XOM
+$14.7M

Top Sells

Rank Stock Value
1
GLD icon
SPDR Gold Trust
GLD
+$95.5M
2
QQQ icon
Invesco QQQ Trust
QQQ
+$79.6M
3
TSLA icon
Tesla
TSLA
+$75.3M
4
NVDA icon
NVIDIA
NVDA
+$51.6M
5
EFA icon
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
DXLG icon
7926
CALL
Destination XL Group
DXLG
$34.6M
– –
-136
Closed -$8K
DYAI icon
7927
Dyadic International
DYAI
$43.4M
– –
-147
Closed -$1.22K
EBAY icon
7928
eBay
EBAY
$48.4B
$0 ﹤0.01%
55,868
-21,673
-28% -$1.19M
EC icon
7929
PUT
Ecopetrol
EC
$33.2B
– –
-100
Closed -$111K
EDZ icon
7930
Direxion Daily MSCI Emerging Markets Bear 3X ETF
EDZ
$17.8M
– –
-78
Closed -$20K
EEM icon
7931
iShares MSCI Emerging Markets ETF
EEM
$28.4B
– –
-96,212
Closed -$3.85M
EEMV icon
7932
iShares MSCI Emerging Markets Min Vol Factor ETF
EEMV
$3.48B
– –
-541
Closed -$28K
EEX
7933
CALL
DELISTED
Emerald Holding
EEX
– –
-32
Closed -$9K
EEX
7934
DELISTED
Emerald Holding
EEX
$0 ﹤0.01%
+386
New +$1.02K
EFA icon
7935
iShares MSCI EAFE ETF
EFA
$76.9B
– –
-665,841
Closed -$40.5M
EFSC icon
7936
Enterprise Financial Services Corp
EFSC
$2.41B
– –
-27
Closed -$799
EG icon
7937
CALL
Everest Group
EG
$15.2B
– –
-17
Closed -$350K
EG icon
7938
PUT
Everest Group
EG
$15.2B
– –
-18
Closed -$371K
EGBN icon
7939
Eagle Bancorp
EGBN
$866M
– –
-405
Closed -$11.9K
EGBN icon
7940
PUT
Eagle Bancorp
EGBN
$866M
– –
-36
Closed -$117K
EHTH icon
7941
eHealth
EHTH
$43.8M
– –
-6,575
Closed -$533K
ELAN icon
7942
Elanco Animal Health
ELAN
$12.5B
– –
-20,758
Closed -$526K
ENB icon
7943
Enbridge
ENB
$124B
$0 ﹤0.01%
25
-51,755
-100% -$1.63M
ENTA icon
7944
Enanta Pharmaceuticals
ENTA
$374M
– –
-70
Closed -$3.39K
EOLS icon
7945
Evolus
EOLS
$392M
$0 ﹤0.01%
34,695
+29,569
+577% +$108K
EOG icon
7946
EOG Resources
EOG
$77.8B
– –
-16,208
Closed -$727K
EPI icon
7947
WisdomTree India Earnings Fund ETF
EPI
$2.03B
– –
-64,858
Closed -$1.3M
EPR icon
7948
EPR Properties
EPR
$4.81B
– –
-24,731
Closed -$773K
EPRT icon
7949
Essential Properties Realty Trust
EPRT
$6.96B
– –
-1,519
Closed -$25.7K
EPRT icon
7950
PUT
Essential Properties Realty Trust
EPRT
$6.96B
– –
-29
Closed -$43K
316 317
318
319 320

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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.