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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
+33.36%
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
$62.7B
AUM Growth
+$5.97B
Cap. Flow
-$480M
Cap. Flow %
-0.77%
Top 10 Hldgs %
44.28%
Holding
8,917
New
1,290
Increased
3,427
Reduced
2,723
Closed
1,278

Top Buys

Rank Stock Value
1
QQQ icon
Invesco QQQ Trust
QQQ
+$77.3M
2
GLD icon
SPDR Gold Trust
GLD
+$73.2M
3
EFA icon
iShares MSCI EAFE ETF
EFA
+$38.5M
4
NFLX icon
Netflix
NFLX
+$38.4M
5
NVDA icon
NVIDIA
NVDA
+$36.3M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$55.9M
2
VXX icon
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
+$28.3M
3
DIA icon
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
+$23.1M
4
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$23.1M
5
ADBE icon
Adobe
ADBE
+$22M

Sector Composition

Rank Sector Weight
1 Technology 0.49%
2 Consumer Discretionary 0.47%
3 Communication Services 0.34%
4 Healthcare 0.26%
5 Financials 0.23%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
CTMX icon
7226
CytomX Therapeutics
CTMX
$705M
$2K ﹤0.01%
258
-107
-29% -$994
CTS icon
7227
CALL
CTS Corp
CTS
$1.72B
$2K ﹤0.01%
+1
New +$21
CUE icon
7228
PUT
Cue Biopharma
CUE
$135M
– –
-3
Closed -$2.17K
CULP icon
7229
Culp Inc
CULP
$45M
$2K ﹤0.01%
300
+127
+73% +$903
CVEO icon
7230
Civeo
CVEO
$379M
$2K ﹤0.01%
327
– –
CVLG icon
7231
CALL
Covenant Logistics
CVLG
$1.18B
$2K ﹤0.01%
14
+10
+250% +$51
CYCN icon
7232
PUT
Cyclerion Therapeutics
CYCN
$15.2M
– –
0
– –
DMRC icon
7233
Digimarc Corp
DMRC
$133M
$2K ﹤0.01%
+185
New +$2.97K
ENSG icon
7234
The Ensign Group
ENSG
$10.1B
$2K ﹤0.01%
+66
New +$2.62K
ERIE icon
7235
CALL
Erie Indemnity
ERIE
$11.7B
$2K ﹤0.01%
+3
New +$528
EVTC icon
7236
CALL
Evertec
EVTC
$1.83B
$2K ﹤0.01%
1
-7
-88% -$186
FDUS icon
7237
CALL
Fidus Investment
FDUS
$737M
$2K ﹤0.01%
+3
New +$26
FOX icon
7238
Fox Class B
FOX
$20.7B
$2K ﹤0.01%
100
-488
-83% -$13K
XRN
7239
PUT
Chiron Real Estate Inc
XRN
$544M
– –
-4
Closed -$217
HAFC icon
7240
Hanmi Financial
HAFC
$943M
$2K ﹤0.01%
302
-143
-32% -$1.41K
HLX icon
7241
PUT
Helix Energy Solutions
HLX
$1.46B
$2K ﹤0.01%
6
-8
-57% -$22
HOMB icon
7242
Home BancShares
HOMB
$6.21B
$2K ﹤0.01%
+145
New +$2.04K
IDN icon
7243
PUT
Intellicheck
IDN
$73.5M
$2K ﹤0.01%
3
-43
-93% -$261
ILPT
7244
Industrial Logistics Properties Trust
ILPT
$613M
$2K ﹤0.01%
138
-635
-82% -$11.7K
INVA icon
7245
PUT
Innoviva
INVA
$1.58B
$2K ﹤0.01%
2
-507
-100% -$6.9K
KB icon
7246
PUT
KB Financial Group
KB
$41.2B
$2K ﹤0.01%
+1
New +$27
KFRC icon
7247
PUT
Kforce
KFRC
$983M
$2K ﹤0.01%
+1
New +$29
KRYS icon
7248
Krystal Biotech
KRYS
$9.88B
$2K ﹤0.01%
+62
New +$2.98K
MARA icon
7249
Marathon Digital Holdings
MARA
$4.62B
$2K ﹤0.01%
+2,630
New +$1.85K
MLR icon
7250
CALL
Miller Industries
MLR
$586M
$2K ﹤0.01%
1
– –
288 289
290
291 292

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Simplex Trading's Q2 2020 Portfolio in Review

As of Q2 2020, Simplex Trading held 8,917 positions worth $62.7B, up 11% from $56.7B the previous quarter. Its ten largest holdings account for 44% of the portfolio.

Simplex Trading's Q2 2020 filing shows 1,290 new, 3,427 increased, 2,723 reduced and 1,278 closed positions. Its largest new stake was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M. The largest sale was Apple, an estimated $55.9M.

By sector, the portfolio is most concentrated in Technology at 0.49% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Communication Services.

  • Simplex Trading's largest Q2 2020 buy was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M.
  • Simplex Trading added most to Invesco QQQ Trust in Q2 2020, an estimated $77.3M increase.
  • Simplex Trading's biggest Q2 2020 reduction was Apple, cutting an estimated $55.9M.
  • Simplex Trading fully exited Adobe in Q2 2020, selling an estimated $22M.
  • Simplex Trading's ten largest holdings make up 44% of its $62.7B portfolio in Q2 2020.
  • Simplex Trading opened 1,290 new positions and closed 1,278 in Q2 2020.
  • Simplex Trading's portfolio value rose 11% quarter-over-quarter to $62.7B.

Based on Simplex Trading's 13F filing for Q2 2020, filed 13 Jul 2020.