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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
TXT icon
6476
Textron
TXT
$16.6B
– –
-1,940
Closed -$73.8K
UAA icon
6477
CALL
Under Armour
UAA
$3B
– –
-1,172
Closed -$345K
UAA icon
6478
PUT
Under Armour
UAA
$3B
– –
-3,801
Closed -$286K
UAN icon
6479
CVR Partners
UAN
$1.3B
– –
-876
Closed -$72.3K
UBS icon
6480
UBS Group
UBS
$170B
– –
-19,559
Closed -$299K
UFPI icon
6481
PUT
UFP Industries
UFPI
$4.97B
– –
-27
Closed -$1K
UGI icon
6482
CALL
UGI
UGI
$8B
– –
-18
Closed -$9K
UGI icon
6483
UGI
UGI
$8B
– –
-1,570
Closed -$66.2K
UGI icon
6484
PUT
UGI
UGI
$8B
– –
-41
Closed -$2K
UMH
6485
UMH Properties
UMH
$1.32B
– –
-2,674
Closed -$27K
UMH
6486
PUT
UMH Properties
UMH
$1.32B
– –
-62
Closed -$3K
UNG icon
6487
United States Natural Gas Fund
UNG
$470M
– –
-5,710
Closed -$653K
URI icon
6488
United Rentals
URI
$71.1B
– –
-2,287
Closed -$149K
USL icon
6489
United States 12 Month Oil Fund,
USL
$46.6M
– –
-1,489
Closed -$27.3K
USL icon
6490
PUT
United States 12 Month Oil Fund,
USL
$46.6M
– –
-35
Closed -$3K
USPH icon
6491
US Physical Therapy
USPH
$1.14B
$0 ﹤0.01%
+7
New +$384
UTHR icon
6492
United Therapeutics
UTHR
$26.3B
– –
-1,044
Closed -$116K
UUP icon
6493
Invesco DB US Dollar Index Bullish Fund
UUP
$434M
– –
-18,925
Closed -$464K
UVE icon
6494
Universal Insurance Holdings
UVE
$1.16B
– –
-733
Closed -$13.2K
UVV icon
6495
CALL
Universal Corp
UVV
$1.34B
– –
-12
Closed -$8K
UVV icon
6496
Universal Corp
UVV
$1.34B
– –
-492
Closed -$27.1K
UXI icon
6497
ProShares Ultra Industrials
UXI
$31.7M
– –
-2,400
Closed -$22K
UYG icon
6498
ProShares Ultra Financials
UYG
$811M
– –
-4,959
Closed -$106K
VAC icon
6499
PUT
Marriott Vacations Worldwide
VAC
$3.24B
– –
-31
Closed -$2K
VAW icon
6500
Vanguard Materials ETF
VAW
$3B
– –
-219
Closed -$21K
258 259
260
261 262

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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.