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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
-0.41%
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
$1.25B
AUM Growth
-$22.5M
Cap. Flow
-$16M
Cap. Flow %
-1.28%
Top 10 Hldgs %
17.26%
Holding
7,084
New
1,678
Increased
2,214
Reduced
1,528
Closed
1,505

Top Buys

Rank Stock Value
1
AVGO icon
Broadcom
AVGO
+$33.7M
2
GLD icon
SPDR Gold Trust
GLD
+$17.8M
3
EEM icon
iShares MSCI Emerging Markets ETF
EEM
+$14.3M
4
MDY icon
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
+$11.9M
5
C icon
Citigroup
C
+$8.7M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$34.2M
2
GMCR
KEURIG GREEN MTN INC
GMCR
+$17.9M
3
CMG icon
Chipotle Mexican Grill
CMG
+$14.7M
4
DIS icon
Walt Disney
DIS
+$13.3M
5
BKNG icon
Booking.com
BKNG
+$12.1M

Sector Composition

Rank Sector Weight
1 Technology 7.64%
2 Communication Services 6.85%
3 Consumer Discretionary 4.92%
4 Healthcare 4.57%
5 Financials 4.22%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
TK icon
4801
CALL
Teekay
TK
$974M
$2K ﹤0.01%
50
-16
-24% -$121
TKR icon
4802
CALL
Timken Company
TKR
$9.81B
$2K ﹤0.01%
+21
New +$609
TNET icon
4803
CALL
TriNet
TNET
$2.94B
$2K ﹤0.01%
51
+13
+34% +$185
TPH
4804
CALL
DELISTED
Tri Pointe Homes
TPH
$2K ﹤0.01%
+25
New +$264
TRAK icon
4805
PUT
ReposiTrak
TRAK
$156M
$2K ﹤0.01%
+85
New +$768
TREE icon
4806
PUT
LendingTree
TREE
$564M
$2K ﹤0.01%
+56
New +$4.38K
TRUE
4807
CALL
DELISTED
TrueCar
TRUE
$2K ﹤0.01%
12
-76
-86% -$459
TSLX icon
4808
CALL
Sixth Street Specialty
TSLX
$1.63B
$2K ﹤0.01%
+67
New +$1.07K
TTEK icon
4809
CALL
Tetra Tech
TTEK
$8.28B
$2K ﹤0.01%
+60
New +$319
TTWO icon
4810
Take-Two Interactive
TTWO
$45.3B
$2K ﹤0.01%
+61
New +$2.11K
TTWO icon
4811
PUT
Take-Two Interactive
TTWO
$45.3B
$2K ﹤0.01%
21
+15
+250% +$519
UGI icon
4812
PUT
UGI
UGI
$7.91B
$2K ﹤0.01%
41
+32
+356% +$1.16K
UNFI icon
4813
PUT
United Natural Foods
UNFI
$2.97B
$2K ﹤0.01%
13
-9
-41% -$332
UPBD icon
4814
PUT
Upbound Group
UPBD
$1.2B
$2K ﹤0.01%
9
+4
+80% +$53
USL icon
4815
CALL
United States 12 Month Oil Fund,
USL
$44.8M
$2K ﹤0.01%
+56
New +$866
VAC icon
4816
PUT
Marriott Vacations Worldwide
VAC
$3.4B
$2K ﹤0.01%
+31
New +$1.75K
VANI icon
4817
Vivani Medical
VANI
$112M
$2K ﹤0.01%
+24
New +$2.76K
VIV icon
4818
PUT
Telefônica Brasil
VIV
$22.5B
$2K ﹤0.01%
112
+40
+56% +$389
VLRS
4819
PUT
Controladora Vuela Compania de Aviacion
VLRS
$898M
$2K ﹤0.01%
+39
New +$718
VNET
4820
CALL
VNET Group
VNET
$2.04B
$2K ﹤0.01%
55
-569
-91% -$10.9K
VRSN icon
4821
PUT
VeriSign
VRSN
$24.8B
$2K ﹤0.01%
93
-71
-43% -$5.8K
VSH icon
4822
PUT
Vishay Intertechnology
VSH
$5.7B
$2K ﹤0.01%
+78
New +$896
VXRT
4823
PUT
DELISTED
Vaxart
VXRT
$2K ﹤0.01%
2
– –
VYM icon
4824
CALL
Vanguard High Dividend Yield ETF
VYM
$81.3B
$2K ﹤0.01%
+7
New +$458
WB icon
4825
PUT
Weibo
WB
$1.92B
$2K ﹤0.01%
25
-12
-32% -$193
191 192
193
194 195

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Simplex Trading's Q1 2016 Portfolio in Review

As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.

Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.

By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.

  • Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
  • Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
  • Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
  • Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
  • Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
  • Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
  • Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.

Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.