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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
+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
HCC icon
5251
PUT
Warrior Met Coal
HCC
$4.17B
$2K ﹤0.01%
+10
New +$174
HLI icon
5252
CALL
Houlihan Lokey
HLI
$10.2B
$2K ﹤0.01%
32
+13
+68% +$441
HMC icon
5253
PUT
Honda
HMC
$39.3B
$2K ﹤0.01%
19
– –
HSIC icon
5254
PUT
Henry Schein
HSIC
$9.76B
$2K ﹤0.01%
36
-367
-91% -$25.6K
HTBK
5255
PUT
DELISTED
Heritage Commerce
HTBK
$2K ﹤0.01%
90
-122
-58% -$1.69K
HXL icon
5256
CALL
Hexcel
HXL
$8.3B
$2K ﹤0.01%
14
– –
HZO icon
5257
PUT
MarineMax
HZO
$782M
$2K ﹤0.01%
+41
New +$802
IBRX icon
5258
PUT
ImmunityBio
IBRX
$7.3B
$2K ﹤0.01%
+8
New +$35
IHG icon
5259
PUT
InterContinental Hotels
IHG
$23.9B
$2K ﹤0.01%
10
-28
-74% -$1.61K
INDB icon
5260
PUT
Independent Bank
INDB
$4.1B
$2K ﹤0.01%
14
-11
-44% -$701
INGR icon
5261
PUT
Ingredion
INGR
$6.48B
$2K ﹤0.01%
10
-9
-47% -$1.07K
INSG icon
5262
CALL
Inseego
INSG
$111M
$2K ﹤0.01%
10
-3
-23% -$46
INVH icon
5263
CALL
Invitation Homes
INVH
$17.9B
$2K ﹤0.01%
+22
New +$474
IRM icon
5264
CALL
Iron Mountain
IRM
$37.4B
$2K ﹤0.01%
38
+20
+111% +$700
IRT icon
5265
PUT
Independence Realty Trust
IRT
$3.93B
$2K ﹤0.01%
+30
New +$285
ITT icon
5266
PUT
ITT
ITT
$17.8B
$2K ﹤0.01%
65
+31
+91% +$1.24K
ITRI icon
5267
PUT
Itron
ITRI
$4.75B
$2K ﹤0.01%
27
-67
-71% -$4.39K
KAI icon
5268
PUT
Kadant
KAI
$3.72B
$2K ﹤0.01%
+4
New +$279
KB icon
5269
PUT
KB Financial Group
KB
$40.6B
$2K ﹤0.01%
+93
New +$4.33K
KOP icon
5270
CALL
Koppers
KOP
$965M
$2K ﹤0.01%
+11
New +$424
KTCC icon
5271
CALL
Key Tronic
KTCC
$43.4M
$2K ﹤0.01%
80
-4
-5% -$28
LAD icon
5272
CALL
Lithia Motors
LAD
$8.17B
$2K ﹤0.01%
8
-21
-72% -$1.9K
LDOS icon
5273
CALL
Leidos
LDOS
$14.9B
$2K ﹤0.01%
39
-167
-81% -$8.89K
LHX icon
5274
PUT
L3Harris
LHX
$56.9B
$2K ﹤0.01%
14
+10
+250% +$1.1K
LKQ icon
5275
PUT
LKQ Corp
LKQ
$6.77B
$2K ﹤0.01%
141
-36
-20% -$1.11K
209 210
211
212 213

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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.