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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
+33.36%
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
$62.7B
AUM Growth
+$5.97B
Cap. Flow
-$480M
Cap. Flow %
-0.77%
Top 10 Hldgs %
44.28%
Holding
8,917
New
1,290
Increased
3,427
Reduced
2,723
Closed
1,278

Top Buys

Rank Stock Value
1
QQQ icon
Invesco QQQ Trust
QQQ
+$77.3M
2
GLD icon
SPDR Gold Trust
GLD
+$73.2M
3
EFA icon
iShares MSCI EAFE ETF
EFA
+$38.5M
4
NFLX icon
Netflix
NFLX
+$38.4M
5
NVDA icon
NVIDIA
NVDA
+$36.3M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$55.9M
2
VXX icon
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
+$28.3M
3
DIA icon
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
+$23.1M
4
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$23.1M
5
ADBE icon
Adobe
ADBE
+$22M

Sector Composition

Rank Sector Weight
1 Technology 0.49%
2 Consumer Discretionary 0.47%
3 Communication Services 0.34%
4 Healthcare 0.26%
5 Financials 0.23%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
CDTX
7651
DELISTED
Cidara Therapeutics
CDTX
– –
-94
Closed -$6.09K
CDW icon
7652
CDW
CDW
$17.1B
– –
-1,310
Closed -$142K
CENT icon
7653
Central Garden & Pet Co
CENT
$2.74B
– –
-413
Closed -$9K
CFFN icon
7654
Capitol Federal Financial
CFFN
$1.08B
– –
-1,257
Closed -$14.4K
CGBD icon
7655
Carlyle Secured Lending
CGBD
$698M
– –
-3,769
Closed -$29.4K
CHD icon
7656
Church & Dwight Co
CHD
$23.1B
– –
-5,689
Closed -$414K
CHKP icon
7657
Check Point Software Technologies
CHKP
$13.3B
– –
-45,560
Closed -$4.83M
CI icon
7658
Cigna
CI
$76.6B
– –
-21,921
Closed -$4.16M
CIA icon
7659
Citizens
CIA
$245M
– –
-531
Closed -$3.05K
CIO
7660
DELISTED
City Office REIT
CIO
– –
-2,926
Closed -$27.1K
CIO
7661
PUT
DELISTED
City Office REIT
CIO
– –
-31
Closed -$22K
CLAR icon
7662
Clarus
CLAR
$125M
– –
-1,189
Closed -$11K
CLAR icon
7663
PUT
Clarus
CLAR
$125M
– –
-12
Closed -$11K
CLDT
7664
Chatham Lodging
CLDT
$630M
– –
-644
Closed -$4.31K
CLMT icon
7665
Calumet Specialty Products
CLMT
$3.63B
$0 ﹤0.01%
200
-8,216
-98% -$17.6K
CLS icon
7666
Celestica
CLS
$35.1B
– –
-4,931
Closed -$28.2K
CLS icon
7667
PUT
Celestica
CLS
$35.1B
– –
-54
Closed -$18K
CM icon
7668
Canadian Imperial Bank of Commerce
CM
$107B
– –
-50,586
Closed -$1.58M
CMA
7669
DELISTED
Comerica
CMA
– –
-19,645
Closed -$685K
CMCO icon
7670
CALL
Columbus McKinnon
CMCO
$465M
– –
-1
Closed -$2K
CMCO icon
7671
Columbus McKinnon
CMCO
$465M
– –
-566
Closed -$14K
CMCSA icon
7672
Comcast
CMCSA
$79.7B
– –
-378,013
Closed -$14.4M
CMI icon
7673
Cummins
CMI
$91.7B
– –
-7,716
Closed -$1.23M
CMS icon
7674
CMS Energy
CMS
$23.1B
– –
-1,090
Closed -$63.1K
CNC icon
7675
Centene
CNC
$31.3B
$0 ﹤0.01%
14,117
+13,213
+1,462% +$860K
305 306
307
308 309

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Simplex Trading's Q2 2020 Portfolio in Review

As of Q2 2020, Simplex Trading held 8,917 positions worth $62.7B, up 11% from $56.7B the previous quarter. Its ten largest holdings account for 44% of the portfolio.

Simplex Trading's Q2 2020 filing shows 1,290 new, 3,427 increased, 2,723 reduced and 1,278 closed positions. Its largest new stake was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M. The largest sale was Apple, an estimated $55.9M.

By sector, the portfolio is most concentrated in Technology at 0.49% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Communication Services.

  • Simplex Trading's largest Q2 2020 buy was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M.
  • Simplex Trading added most to Invesco QQQ Trust in Q2 2020, an estimated $77.3M increase.
  • Simplex Trading's biggest Q2 2020 reduction was Apple, cutting an estimated $55.9M.
  • Simplex Trading fully exited Adobe in Q2 2020, selling an estimated $22M.
  • Simplex Trading's ten largest holdings make up 44% of its $62.7B portfolio in Q2 2020.
  • Simplex Trading opened 1,290 new positions and closed 1,278 in Q2 2020.
  • Simplex Trading's portfolio value rose 11% quarter-over-quarter to $62.7B.

Based on Simplex Trading's 13F filing for Q2 2020, filed 13 Jul 2020.