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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
XYL icon
6551
Xylem
XYL
$28.5B
– –
-390
Closed -$16.9K
ZBH icon
6552
Zimmer Biomet
ZBH
$17.7B
– –
-11,162
Closed -$1.26M
ZBRA icon
6553
CALL
Zebra Technologies
ZBRA
$12.4B
– –
-88
Closed -$8K
ZD icon
6554
Ziff Davis
ZD
$1.9B
– –
-2,588
Closed -$144K
ZTS icon
6555
Zoetis
ZTS
$31.6B
– –
-2,017
Closed -$95.3K
ZUMZ icon
6556
CALL
Zumiez
ZUMZ
$320M
– –
-63
Closed -$6K
MTUS icon
6557
CALL
Metallus
MTUS
$873M
– –
-11
Closed -$6K
CPAY icon
6558
Corpay
CPAY
$24.2B
– –
-18,647
Closed -$2.77M
TRAW icon
6559
Traws Pharma
TRAW
$7.43M
– –
0
– –
TRAW icon
6560
PUT
Traws Pharma
TRAW
$7.43M
– –
0
– -$2K
CNH
6561
CNH Industrial
CNH
$13.8B
– –
-1,789
Closed -$11K
CNH
6562
PUT
CNH Industrial
CNH
$13.8B
– –
-11
Closed -$1K
ONIT
6563
CALL
Onity Group
ONIT
$333M
– –
-20
Closed -$1K
NBIS
6564
Nebius Group N.V.
NBIS
$47.7B
– –
-7,774
Closed -$151K
TVRD
6565
Tvardi Therapeutics
TVRD
$23.5M
– –
-190
Closed -$41.4K
VIVS
6566
VivoSim Labs
VIVS
$1.46M
– –
-87
Closed -$58.4K
TPC
6567
Tutor Perini Cor
TPC
$4.57B
– –
-1,313
Closed -$25.6K
BECN
6568
CALL
DELISTED
Beacon Roofing Supply, Inc.
BECN
– –
-13
Closed -$1K
CMRX
6569
DELISTED
Chimerix, Inc.
CMRX
– –
-38,314
Closed -$189K
ENZ
6570
PUT
DELISTED
Enzo Biochem, Inc.
ENZ
– –
-49
Closed -$11K
NVRO
6571
DELISTED
NEVRO CORP.
NVRO
– –
-3,126
Closed -$212K
ITCI
6572
DELISTED
Intra-Cellular Therapies Inc.
ITCI
– –
-1,867
Closed -$67.1K
VOXX
6573
DELISTED
VOXX International Corporation Class A
VOXX
$0 ﹤0.01%
+49
New +$182
SUM
6574
CALL
DELISTED
Summit Materials, Inc. Class A Common Stock
SUM
– –
-25
Closed -$5K
B
6575
CALL
DELISTED
Barnes Group Inc.
B
– –
-24
Closed -$2K
261 262
263
264 265

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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.