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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
-6.21%
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
$56.7B
AUM Growth
+$11B
Cap. Flow
+$631M
Cap. Flow %
1.11%
Top 10 Hldgs %
50.41%
Holding
8,783
New
1,512
Increased
3,249
Reduced
2,705
Closed
1,159

Top Buys

Rank Stock Value
1
GLD icon
SPDR Gold Trust
GLD
+$31.6M
2
SLV icon
iShares Silver Trust
SLV
+$28.1M
3
DIA icon
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
+$25.1M
4
JPM icon
JPMorgan Chase
JPM
+$24.5M
5
JNUG icon
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
+$24M

Top Sells

Rank Stock Value
1
GOOG icon
Alphabet (Google) Class C
GOOG
+$51.6M
2
AMZN icon
Amazon
AMZN
+$47.4M
3
TLT icon
iShares 20+ Year Treasury Bond ETF
TLT
+$44.7M
4
NFLX icon
Netflix
NFLX
+$38.3M
5
NVDA icon
NVIDIA
NVDA
+$31.1M

Sector Composition

Rank Sector Weight
1 Technology 0.49%
2 Healthcare 0.33%
3 Consumer Discretionary 0.32%
4 Financials 0.16%
5 Communication Services 0.16%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
VSTM icon
8351
Verastem
VSTM
$518M
$0 ﹤0.01%
25
-2,211
-99% -$55.4K
VT icon
8352
Vanguard Total World Stock ETF
VT
$77.2B
– –
-2,072
Closed -$167K
VTI icon
8353
Vanguard Total Stock Market ETF
VTI
$661B
– –
-5,819
Closed -$952K
VTLE
8354
DELISTED
Vital Energy
VTLE
– –
-104
Closed -$3.02K
VTLE
8355
PUT
DELISTED
Vital Energy
VTLE
– –
-4
Closed -$20K
VTOL icon
8356
Bristow Group
VTOL
$1.33B
$0 ﹤0.01%
+50
New +$886
VTRS icon
8357
Viatris
VTRS
$19.8B
– –
-4,715
Closed -$90.3K
VUG icon
8358
Vanguard Growth ETF
VUG
$222B
– –
-15,336
Closed -$465K
VXUS icon
8359
CALL
Vanguard Total International Stock ETF
VXUS
$155B
– –
-4
Closed -$22K
VZ icon
8360
Verizon
VZ
$185B
– –
-10,349
Closed -$592K
WAL icon
8361
Western Alliance Bancorporation
WAL
$9.11B
– –
-3,215
Closed -$154K
WBA
8362
DELISTED
Walgreens Boots Alliance
WBA
– –
-564
Closed -$28.6K
WCC
8363
WESCO International
WCC
$16.1B
– –
-63,679
Closed -$2.71M
WD icon
8364
PUT
Walker & Dunlop
WD
$1.64B
– –
-17
Closed -$109K
WEAT icon
8365
Teucrium Wheat Fund
WEAT
$324M
– –
-4,867
Closed -$142K
WEC icon
8366
WEC Energy
WEC
$37B
– –
-11,752
Closed -$1.13M
WERN icon
8367
Werner Enterprises
WERN
$2.75B
– –
-1,006
Closed -$36.2K
WEN icon
8368
Wendy's
WEN
$1.41B
– –
-29,229
Closed -$575K
WIX icon
8369
WIX.com
WIX
$2.04B
– –
-10,481
Closed -$1.37M
WIT icon
8370
CALL
Wipro
WIT
$17.9B
– –
-32
Closed -$6K
WIT icon
8371
Wipro
WIT
$17.9B
– –
-1,526
Closed -$2K
WLDN icon
8372
PUT
Willdan Group
WLDN
$1.13B
– –
-29
Closed -$92K
WRAP icon
8373
Wrap Technologies
WRAP
$99.2M
– –
-4,722
Closed -$28K
WSM icon
8374
Williams-Sonoma
WSM
$26.2B
– –
-33,854
Closed -$1.08M
XERS icon
8375
CALL
Xeris Biopharma Holdings
XERS
$1.45B
– –
-2
Closed -$1K
333 334
335
336 337

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Simplex Trading's Q1 2020 Portfolio in Review

As of Q1 2020, Simplex Trading held 8,783 positions worth $56.7B, up 24% from $45.7B the previous quarter. Its ten largest holdings account for 50% of the portfolio.

Simplex Trading's Q1 2020 filing shows 1,512 new, 3,249 increased, 2,705 reduced and 1,159 closed positions. Its largest new stake was SPDR Gold Trust: 212,230 shares worth $31.4M. The largest sale was Alphabet (Google) Class C, an estimated $51.6M.

By sector, the portfolio is most concentrated in Technology at 0.49% of assets, down from 0.75% a quarter earlier, followed by Healthcare and Consumer Discretionary.

  • Simplex Trading's largest Q1 2020 buy was SPDR Gold Trust: 212,230 shares worth $31.4M.
  • Simplex Trading added most to JPMorgan Chase in Q1 2020, an estimated $24.5M increase.
  • Simplex Trading's biggest Q1 2020 reduction was Amazon, cutting an estimated $47.4M.
  • Simplex Trading fully exited Alphabet (Google) Class C in Q1 2020, selling an estimated $51.6M.
  • Simplex Trading's ten largest holdings make up 50% of its $56.7B portfolio in Q1 2020.
  • Simplex Trading opened 1,512 new positions and closed 1,159 in Q1 2020.
  • Simplex Trading's portfolio value rose 24% quarter-over-quarter to $56.7B.

Based on Simplex Trading's 13F filing for Q1 2020, filed 29 Apr 2020.