We are live on ! Find out more
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
+4.52%
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
$2.3B
AUM Growth
-$8.99M
Cap. Flow
-$114M
Cap. Flow %
-4.94%
Top 10 Hldgs %
22.88%
Holding
7,527
New
1,408
Increased
2,202
Reduced
2,320
Closed
1,474

Top Buys

Rank Stock Value
1
AMZN icon
Amazon
AMZN
+$83.1M
2
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$37.2M
3
AMGN icon
Amgen
AMGN
+$30.5M
4
MU icon
Micron Technology
MU
+$28.8M
5
QCOM icon
Qualcomm
QCOM
+$18.2M

Top Sells

Rank Stock Value
1
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$29.5M
2
GS icon
Goldman Sachs
GS
+$27.8M
3
GILD icon
Gilead Sciences
GILD
+$27.6M
4
BKNG icon
Booking.com
BKNG
+$25.4M
5
T icon
AT&T
T
+$19.6M

Sector Composition

Rank Sector Weight
1 Technology 13.55%
2 Communication Services 11.57%
3 Consumer Discretionary 9.69%
4 Healthcare 7.28%
5 Financials 4.17%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
PFGC icon
5676
CALL
Performance Food Group
PFGC
$17.5B
$1K ﹤0.01%
+13
New +$344
PGR icon
5677
CALL
Progressive
PGR
$124B
$1K ﹤0.01%
9
-56
-86% -$2.33K
PHX
5678
PUT
DELISTED
PHX Minerals
PHX
$1K ﹤0.01%
+34
New +$691
PKE icon
5679
PUT
Park Aerospace
PKE
$745M
$1K ﹤0.01%
83
+48
+137% +$834
PKX icon
5680
CALL
POSCO
PKX
$15.8B
$1K ﹤0.01%
+8
New +$482
PLAB icon
5681
CALL
Photronics
PLAB
$1.79B
$1K ﹤0.01%
267
+15
+6% +$158
PLD icon
5682
PUT
Prologis
PLD
$138B
$1K ﹤0.01%
126
-96
-43% -$5.34K
PLUR icon
5683
CALL
Pluri
PLUR
$19.2M
$1K ﹤0.01%
+1
New +$111
PLXS icon
5684
Plexus
PLXS
$6.81B
$1K ﹤0.01%
29
-238
-89% -$12.6K
PMT
5685
PUT
PennyMac Mortgage Investment
PMT
$849M
$1K ﹤0.01%
+32
New +$569
PNW icon
5686
CALL
Pinnacle West Capital
PNW
$12.9B
$1K ﹤0.01%
24
-103
-81% -$8.87K
PPL
5687
PUT
PPL Corp
PPL
$27.3B
$1K ﹤0.01%
50
-1
-2% -$39
PR
5688
CALL
Permian Resources
PR
$17.9B
$1K ﹤0.01%
+9
New +$148
PRA
5689
PUT
DELISTED
ProAssurance
PRA
$1K ﹤0.01%
10
+1
+11% +$60
PRI icon
5690
CALL
Primerica
PRI
$9.81B
$1K ﹤0.01%
+3
New +$235
PSEC icon
5691
CALL
Prospect Capital
PSEC
$1.06B
$1K ﹤0.01%
97
+6
+7% +$51
PUK icon
5692
PUT
Prudential
PUK
$36.5B
$1K ﹤0.01%
34
– –
PXLW icon
5693
CALL
Pixelworks
PXLW
$38.8M
$1K ﹤0.01%
+1
New +$59
QLYS icon
5694
PUT
Qualys
QLYS
$4.84B
$1K ﹤0.01%
+17
New +$683
RAMP icon
5695
CALL
LiveRamp
RAMP
$2.29B
$1K ﹤0.01%
41
-25
-38% -$680
RBA icon
5696
PUT
RB Global
RBA
$20.8B
$1K ﹤0.01%
19
+8
+73% +$248
RBBN icon
5697
PUT
Ribbon Communications
RBBN
$354M
$1K ﹤0.01%
+28
New +$206
RCI icon
5698
PUT
Rogers Communications
RCI
$17.7B
$1K ﹤0.01%
+10
New +$462
RGLS
5699
PUT
DELISTED
Regulus Therapeutics
RGLS
– –
-1
Closed -$167
RGR icon
5700
CALL
Sturm, Ruger & Co
RGR
$610M
$1K ﹤0.01%
53
+11
+26% +$684
226 227
228
229 230

Similar funds

Mitsubishi UFJ Asset Management
Mitsubishi UFJ Asset Management Tokyo, Japan $149B AUM 24.71% 1-Year Est. Return
Creative Planning
Creative Planning Overland Park, Kansas $147B AUM 18.73% 1-Year Est. Return
Jennison Associates
Jennison Associates New York $145B AUM 34.61% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $154B AUM 29.96% 1-Year Est. Return
Canada Pension Plan Investment Board
Canada Pension Plan Investment Board Toronto Ontario, Ontario, Canada $155B AUM 29.93% 1-Year Est. Return
Victory Capital Management
Victory Capital Management San Antonio, Texas $156B AUM 27.51% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $140B AUM 27.84% 1-Year Est. Return

Simplex Trading's Q2 2017 Portfolio in Review

As of Q2 2017, Simplex Trading held 7,527 positions worth $2.3B, down 0.39% from $2.31B the previous quarter. Its ten largest holdings account for 23% of the portfolio.

Simplex Trading withdrew a net $114M in Q2 2017, closing 1,474 positions and reducing 2,320 holdings. Its most notable exit was AT&T, an estimated $19.6M position sold in full.

By sector, the portfolio is most concentrated in Technology at 14% of assets, up from 9.7% a quarter earlier, followed by Communication Services and Consumer Discretionary.

Against the trend, Simplex Trading opened a new position in Amgen worth $32.3M.

  • Simplex Trading's largest Q2 2017 buy was Amgen: 187,633 shares worth $32.3M.
  • Simplex Trading added most to Amazon in Q2 2017, an estimated $83.1M increase.
  • Simplex Trading's biggest Q2 2017 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $29.5M.
  • Simplex Trading fully exited AT&T in Q2 2017, selling an estimated $19.6M.
  • Simplex Trading's ten largest holdings make up 23% of its $2.3B portfolio in Q2 2017.
  • Simplex Trading opened 1,408 new positions and closed 1,474 in Q2 2017.
  • Simplex Trading's portfolio value fell 0.39% quarter-over-quarter to $2.3B.

Based on Simplex Trading's 13F filing for Q2 2017, filed 12 Jul 2017.