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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
SIMO icon
5226
PUT
Silicon Motion
SIMO
$9.19B
$1K ﹤0.01%
4
– –
SKT icon
5227
PUT
Tanger
SKT
$4.82B
$1K ﹤0.01%
17
+4
+31% +$132
SKYW icon
5228
PUT
Skywest
SKYW
$4.11B
$1K ﹤0.01%
70
+24
+52% +$406
SLQD icon
5229
PUT
iShares 0-5 Year Investment Grade Corporate Bond ETF
SLQD
$2.36B
$1K ﹤0.01%
17
+2
+13% +$100
SMCI icon
5230
PUT
Super Micro Computer
SMCI
$19.5B
$1K ﹤0.01%
+70
New +$209
SOYB icon
5231
CALL
Teucrium Soybean Fund
SOYB
$57.2M
$1K ﹤0.01%
52
-70
-57% -$1.23K
SPB icon
5232
PUT
Spectrum Brands
SPB
$2.04B
$1K ﹤0.01%
+2
New +$197
SPWH icon
5233
PUT
Sportsman's Warehouse
SPWH
$43.7M
$1K ﹤0.01%
+27
New +$344
SSP icon
5234
CALL
E.W. Scripps
SSP
$274M
$1K ﹤0.01%
+126
New +$2.21K
STNG icon
5235
PUT
Scorpio Tankers
STNG
$3.96B
– –
0
– –
SYY icon
5236
PUT
Sysco
SYY
$39.7B
$1K ﹤0.01%
27
-695
-96% -$30K
TBPH icon
5237
PUT
Theravance Biopharma
TBPH
$874M
$1K ﹤0.01%
+9
New +$147
TDC icon
5238
PUT
Teradata
TDC
$2.68B
$1K ﹤0.01%
4
-91
-96% -$2.25K
TDW icon
5239
CALL
Tidewater
TDW
$3.91B
$1K ﹤0.01%
1
-10
-91% -$1.98K
TEF
5240
CALL
DELISTED
Telefonica
TEF
$1K ﹤0.01%
46
-58
-56% -$473
TFSL icon
5241
CALL
TFS Financial
TFSL
$5.1B
$1K ﹤0.01%
+15
New +$256
TGI
5242
PUT
DELISTED
Triumph Group
TGI
$1K ﹤0.01%
26
-3
-10% -$91
THO icon
5243
CALL
Thor Industries
THO
$3.99B
$1K ﹤0.01%
+1
New +$55
THO icon
5244
PUT
Thor Industries
THO
$3.99B
$1K ﹤0.01%
+34
New +$1.86K
TKR icon
5245
PUT
Timken Company
TKR
$9.82B
$1K ﹤0.01%
34
+3
+10% +$87
TOUR
5246
CALL
Tuniu
TOUR
$55.4M
$1K ﹤0.01%
+2
New +$236
TPST icon
5247
CALL
Tempest Therapeutics
TPST
$14.8M
– –
0
– –
TRMK icon
5248
PUT
Trustmark
TRMK
$2.73B
$1K ﹤0.01%
+23
New +$507
TX icon
5249
PUT
Ternium
TX
$9.29B
$1K ﹤0.01%
+36
New +$502
UFPI icon
5250
PUT
UFP Industries
UFPI
$4.97B
$1K ﹤0.01%
+27
New +$643
208 209
210
211 212

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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.