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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
+8.02%
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
$1.48B
AUM Growth
-$21.1M
Cap. Flow
-$87.1M
Cap. Flow %
-5.91%
Top 10 Hldgs %
17.83%
Holding
7,235
New
1,460
Increased
2,220
Reduced
1,939
Closed
1,479

Top Buys

Rank Stock Value
1
GILD icon
Gilead Sciences
GILD
+$17.3M
2
AAPL icon
Apple
AAPL
+$15.2M
3
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$14.9M
4
BKNG icon
Booking.com
BKNG
+$14.7M
5
WFC icon
Wells Fargo
WFC
+$12.9M

Top Sells

Rank Stock Value
1
GLD icon
SPDR Gold Trust
GLD
+$38.3M
2
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
+$30.7M
3
LNKD
LinkedIn Corporation
LNKD
+$15.2M
4
CELG
Celgene Corp
CELG
+$12.6M
5
TBT icon
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
+$10.4M

Sector Composition

Rank Sector Weight
1 Communication Services 8.39%
2 Healthcare 8.28%
3 Consumer Discretionary 6.84%
4 Technology 6.06%
5 Financials 4.39%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
TMO icon
6451
Thermo Fisher Scientific
TMO
$213B
– –
-381
Closed -$58.7K
TNC icon
6452
Tennant Co
TNC
$1.48B
– –
-387
Closed -$20K
TNXP icon
6453
Tonix Pharmaceuticals
TNXP
$169M
– –
0
– –
TOWN icon
6454
Towne Bank
TOWN
$3.28B
– –
-565
Closed -$13.1K
TR icon
6455
CALL
Tootsie Roll Industries
TR
$2.85B
– –
-27
Closed -$5K
TREX icon
6456
Trex
TREX
$4.4B
– –
-6,784
Closed -$94.6K
TRI icon
6457
Thomson Reuters
TRI
$37.4B
– –
-862
Closed -$41.7K
TRI icon
6458
PUT
Thomson Reuters
TRI
$37.4B
– –
-16
Closed -$3K
TRMB icon
6459
CALL
Trimble
TRMB
$11.7B
– –
-72
Closed -$7K
TRN icon
6460
Trinity Industries
TRN
$2.92B
– –
-6,025
Closed -$99.2K
TRS icon
6461
TriMas Corp
TRS
$1.44B
– –
-221
Closed -$3K
TRS icon
6462
PUT
TriMas Corp
TRS
$1.44B
– –
-19
Closed -$1K
TS icon
6463
Tenaris
TS
$29B
– –
-3,966
Closed -$109K
TTEK icon
6464
Tetra Tech
TTEK
$7.93B
– –
-4,230
Closed -$28.7K
TTI icon
6465
TETRA Technologies
TTI
$1.26B
– –
-1,344
Closed -$8K
TTNP
6466
DELISTED
Titan Pharmaceuticals
TTNP
– –
-1
Closed -$19.4K
TTNP
6467
PUT
DELISTED
Titan Pharmaceuticals
TTNP
– –
0
– -$1K
TTT icon
6468
ProShares UltraPro Short 20+ Year Treasury
TTT
$18.8M
$0 ﹤0.01%
5
-716
-99% -$63.6K
TU icon
6469
Telus
TU
$15.8B
$0 ﹤0.01%
50
-1,486
-97% -$24.6K
TWO
6470
Two Harbors Investment
TWO
$1.27B
– –
-197
Closed -$13.9K
TWO
6471
PUT
Two Harbors Investment
TWO
$1.27B
– –
-6
Closed -$1K
TX icon
6472
CALL
Ternium
TX
$9.25B
– –
-27
Closed -$1K
TYL icon
6473
Tyler Technologies
TYL
$11.9B
$0 ﹤0.01%
+2
New +$333
TZA icon
6474
Direxion Daily Small Cap Bear 3x ETF
TZA
$210M
– –
-13
Closed -$194K
TZOO icon
6475
Travelzoo
TZOO
$103M
– –
-128
Closed -$1.43K
257 258
259
260 261

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Simplex Trading's Q3 2016 Portfolio in Review

As of Q3 2016, Simplex Trading held 7,235 positions worth $1.48B, down 1.4% from $1.5B the previous quarter. Its ten largest holdings account for 18% of the portfolio.

Simplex Trading withdrew a net $87.1M in Q3 2016, closing 1,479 positions and reducing 1,939 holdings. Its most notable exit was SPDR Gold Trust, an estimated $38.3M position sold in full.

By sector, the portfolio is most concentrated in Communication Services at 8.4% of assets, up from 6.6% a quarter earlier, followed by Healthcare and Consumer Discretionary.

Against the trend, Simplex Trading opened a new position in Booking.com worth $15.6M.

  • Simplex Trading's largest Q3 2016 buy was Booking.com: 264,225 shares worth $15.6M.
  • Simplex Trading added most to Gilead Sciences in Q3 2016, an estimated $17.3M increase.
  • Simplex Trading's biggest Q3 2016 reduction was LinkedIn Corporation, cutting an estimated $15.2M.
  • Simplex Trading fully exited SPDR Gold Trust in Q3 2016, selling an estimated $38.3M.
  • Simplex Trading's ten largest holdings make up 18% of its $1.48B portfolio in Q3 2016.
  • Simplex Trading opened 1,460 new positions and closed 1,479 in Q3 2016.
  • Simplex Trading's portfolio value fell 1.4% quarter-over-quarter to $1.48B.

Based on Simplex Trading's 13F filing for Q3 2016, filed 7 Oct 2016.