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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
CHT icon
3551
Chunghwa Telecom
CHT
$33.7B
$9K ﹤0.01%
+285
New +$9K
CIA icon
3552
PUT
Citizens
CIA
$256M
$9K ﹤0.01%
+131
New +$901
CMA
3553
CALL
DELISTED
Comerica
CMA
$9K ﹤0.01%
+95
New +$3.42K
BGMS
3554
PUT
Bio Green Med Solution Inc
BGMS
$4.94M
– –
0
– –
DBB icon
3555
CALL
Invesco DB Base Metals Fund
DBB
$306M
$9K ﹤0.01%
269
-99
-27% -$1.19K
DOV icon
3556
PUT
Dover
DOV
$27.5B
$9K ﹤0.01%
177
+149
+532% +$7.22K
DXCM icon
3557
CALL
DexCom
DXCM
$29.2B
$9K ﹤0.01%
96
-92
-49% -$1.54K
EIX icon
3558
PUT
Edison International
EIX
$30.9B
$9K ﹤0.01%
139
+45
+48% +$2.92K
ENB icon
3559
CALL
Enbridge
ENB
$121B
$9K ﹤0.01%
+63
New +$2.15K
EQNR icon
3560
CALL
Equinor
EQNR
$90.3B
$9K ﹤0.01%
162
-14
-8% -$195
EQR icon
3561
CALL
Equity Residential
EQR
$25.5B
$9K ﹤0.01%
56
-195
-78% -$14.6K
EVRI
3562
DELISTED
Everi Holdings
EVRI
$9K ﹤0.01%
4,315
+3,580
+487% +$10.7K
EXEL icon
3563
PUT
Exelixis
EXEL
$14B
$9K ﹤0.01%
120
+65
+118% +$275
FLR icon
3564
PUT
Fluor
FLR
$6.93B
$9K ﹤0.01%
250
-14
-5% -$658
GDDY icon
3565
CALL
GoDaddy
GDDY
$13.4B
$9K ﹤0.01%
108
+89
+468% +$2.67K
GIII icon
3566
PUT
G-III Apparel Group
GIII
$1.56B
$9K ﹤0.01%
69
+41
+146% +$1.98K
IQV icon
3567
CALL
IQVIA
IQV
$40B
$9K ﹤0.01%
40
-16
-29% -$1.01K
KEY icon
3568
PUT
KeyCorp
KEY
$24.2B
$9K ﹤0.01%
92
+3
+3% +$34
MAG
3569
DELISTED
MAG Silver
MAG
$9K ﹤0.01%
1,000
-1,700
-63% -$13K
MATV icon
3570
Mativ Holdings
MATV
$479M
$9K ﹤0.01%
+305
New +$10.9K
MCHI icon
3571
iShares MSCI China ETF
MCHI
$6.16B
$9K ﹤0.01%
+235
New +$9.3K
MD icon
3572
PUT
Pediatrix Medical
MD
$2.16B
$9K ﹤0.01%
65
+7
+12% +$464
MKTX icon
3573
MarketAxess Holdings
MKTX
$4.31B
$9K ﹤0.01%
79
-489
-86% -$55.8K
MSB
3574
Mesabi Trust
MSB
$303M
$9K ﹤0.01%
1,665
-7,861
-83% -$38.4K
MTD icon
3575
CALL
Mettler-Toledo International
MTD
$28B
$9K ﹤0.01%
6
– –
141 142
143
144 145

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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.