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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
WD icon
6526
CALL
Walker & Dunlop
WD
$1.65B
– –
-53
Closed -$7K
WCN
6527
PUT
Waste Connections
WCN
$42.8B
– –
-12
Closed -$12K
WDAY icon
6528
Workday
WDAY
$33.4B
– –
-12,248
Closed -$934K
WEAT icon
6529
Teucrium Wheat Fund
WEAT
$314M
– –
-147
Closed -$6K
WEC icon
6530
PUT
WEC Energy
WEC
$37.7B
– –
-49
Closed -$1K
WELL icon
6531
Welltower
WELL
$178B
– –
-3,401
Closed -$242K
WERN icon
6532
Werner Enterprises
WERN
$2.54B
– –
-1,293
Closed -$32.2K
WING icon
6533
Wingstop
WING
$3.68B
– –
-268
Closed -$6.97K
WIT icon
6534
CALL
Wipro
WIT
$18.5B
– –
-475
Closed -$2K
WK icon
6535
Workiva
WK
$2.94B
– –
-526
Closed -$6.67K
WLK icon
6536
CALL
Westlake Corp
WLK
$9.46B
– –
-79
Closed -$15K
WNC icon
6537
PUT
Wabash National
WNC
$543M
– –
-267
Closed -$2K
WPC icon
6538
W.P. Carey
WPC
$17.1B
– –
-1,539
Closed -$96.6K
WPP icon
6539
CALL
WPP
WPP
$4.04B
– –
-17
Closed -$8K
WPP icon
6540
PUT
WPP
WPP
$4.04B
– –
-20
Closed -$2K
WTI icon
6541
CALL
W&T Offshore
WTI
$545M
– –
-263
Closed -$2K
WTS icon
6542
Watts Water Technologies
WTS
$11.5B
– –
-512
Closed -$28K
WTW icon
6543
PUT
Willis Towers Watson
WTW
$27.9B
– –
-21
Closed -$4K
WW
6544
DELISTED
WW International
WW
– –
-3,506
Closed -$48.4K
WWD icon
6545
CALL
Woodward
WWD
$25B
– –
-14
Closed -$1K
X
6546
DELISTED
US Steel
X
– –
-28,276
Closed -$475K
XIN
6547
CALL
DELISTED
Xinyuan Real Estate
XIN
– –
-1
Closed -$1K
XOMA
6548
DELISTED
Xoma
XOMA
– –
-170
Closed -$2.44K
XPRO icon
6549
Expro Ltd
XPRO
$1.79B
– –
-4
Closed -$380
XSD icon
6550
State Street SPDR S&P Semiconductor ETF
XSD
$2.78B
– –
-53
Closed -$2K
260 261
262
263 264

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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.