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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
+5.12%
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
$1.5B
AUM Growth
+$242M
Cap. Flow
+$178M
Cap. Flow %
11.93%
Top 10 Hldgs %
18.61%
Holding
7,153
New
1,586
Increased
2,321
Reduced
1,709
Closed
1,363

Top Buys

Rank Stock Value
1
LNKD
LinkedIn Corporation
LNKD
+$21.4M
2
GLD icon
SPDR Gold Trust
GLD
+$17.3M
3
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
+$15M
4
BIIB icon
Biogen
BIIB
+$14.9M
5
V icon
Visa
V
+$14.1M

Top Sells

Rank Stock Value
1
AVGO icon
Broadcom
AVGO
+$36.7M
2
GOOG icon
Alphabet (Google) Class C
GOOG
+$20.1M
3
EEM icon
iShares MSCI Emerging Markets ETF
EEM
+$15.8M
4
C icon
Citigroup
C
+$14.7M
5
MDY icon
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
+$13.1M

Sector Composition

Rank Sector Weight
1 Communication Services 6.61%
2 Healthcare 6.55%
3 Technology 6.45%
4 Consumer Discretionary 4.54%
5 Financials 4.51%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
VC icon
6501
Visteon
VC
$2.77B
– –
-1,036
Closed -$77.4K
VC icon
6502
PUT
Visteon
VC
$2.77B
– –
-300
Closed -$21K
VCEL icon
6503
CALL
Vericel Corp
VCEL
$2.3B
– –
-8
Closed -$1K
VECO icon
6504
CALL
Veeco
VECO
$3.15B
– –
-40
Closed -$1K
VEON icon
6505
CALL
VEON
VEON
$3.53B
– –
-3
Closed -$5K
VFC icon
6506
VF Corp
VFC
$6.68B
– –
-7,823
Closed -$463K
VFH icon
6507
Vanguard Financials ETF
VFH
$13.3B
$0 ﹤0.01%
+1
New +$47
VIV icon
6508
PUT
Telefônica Brasil
VIV
$22.4B
– –
-112
Closed -$2K
VLRS
6509
CALL
Controladora Vuela Compania de Aviacion
VLRS
$876M
– –
-32
Closed -$10K
VLRS
6510
PUT
Controladora Vuela Compania de Aviacion
VLRS
$876M
– –
-39
Closed -$2K
VMI icon
6511
PUT
Valmont Industries
VMI
$9.44B
– –
-165
Closed -$5K
VNET
6512
VNET Group
VNET
$2.05B
– –
-46,156
Closed -$737K
VNO icon
6513
Vornado Realty Trust
VNO
$7.47B
– –
-3,319
Closed -$257K
VNOM icon
6514
Viper Energy
VNOM
$8.81B
$0 ﹤0.01%
+28
New +$519
VO icon
6515
Vanguard Mid-Cap ETF
VO
$106B
– –
-8,392
Closed -$254K
VOYA icon
6516
CALL
Voya Financial
VOYA
$8.94B
– –
-233
Closed -$3K
VRNT
6517
DELISTED
Verint Systems
VRNT
– –
-6,605
Closed -$114K
VSAT icon
6518
CALL
Viasat
VSAT
$9.79B
– –
-3
Closed -$1K
VSH icon
6519
Vishay Intertechnology
VSH
$5.86B
– –
-685
Closed -$8.53K
VSH icon
6520
PUT
Vishay Intertechnology
VSH
$5.86B
– –
-78
Closed -$2K
VT icon
6521
Vanguard Total World Stock ETF
VT
$76.3B
– –
-72
Closed -$4K
VTR icon
6522
PUT
Ventas
VTR
$48.9B
– –
-106
Closed -$5K
VV icon
6523
Vanguard Large-Cap ETF
VV
$51.9B
– –
-718
Closed -$67K
WAT icon
6524
Waters Corp
WAT
$36.8B
– –
-2,654
Closed -$359K
WBS icon
6525
CALL
Webster Financial
WBS
$12.3B
– –
-40
Closed -$1K
259 260
261
262 263

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Simplex Trading's Q2 2016 Portfolio in Review

As of Q2 2016, Simplex Trading held 7,153 positions worth $1.5B, up 19% from $1.25B the previous quarter. Its ten largest holdings account for 19% of the portfolio.

Simplex Trading deployed $178M of net new capital in Q2 2016, opening 1,586 new positions and adding to 2,321 existing holdings. Its largest new stake was Biogen: 56,467 shares worth $13.7M.

By sector, the portfolio is most concentrated in Communication Services at 6.6% of assets, down from 6.9% a quarter earlier, followed by Healthcare and Technology.

On the sell side, the largest reduction was Broadcom, an estimated $36.7M trimmed.

  • Simplex Trading's largest Q2 2016 buy was Biogen: 56,467 shares worth $13.7M.
  • Simplex Trading added most to LinkedIn Corporation in Q2 2016, an estimated $21.4M increase.
  • Simplex Trading's biggest Q2 2016 reduction was Broadcom, cutting an estimated $36.7M.
  • Simplex Trading fully exited Alphabet (Google) Class C in Q2 2016, selling an estimated $20.1M.
  • Simplex Trading's ten largest holdings make up 19% of its $1.5B portfolio in Q2 2016.
  • Simplex Trading opened 1,586 new positions and closed 1,363 in Q2 2016.
  • Simplex Trading's portfolio value rose 19% quarter-over-quarter to $1.5B.

Based on Simplex Trading's 13F filing for Q2 2016, filed 18 Jul 2016.