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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
+6.28%
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
$91.9B
AUM Growth
+$3.47B
Cap. Flow
+$1.91B
Cap. Flow %
2.08%
Top 10 Hldgs %
34.1%
Holding
11,206
New
1,219
Increased
3,365
Reduced
4,370
Closed
1,942

Top Buys

Rank Stock Value
1
AMZN icon
Amazon
AMZN
+$170M
2
QQQ icon
Invesco QQQ Trust
QQQ
+$71.3M
3
T icon
AT&T
T
+$44.2M
4
META icon
Meta Platforms (Facebook)
META
+$37.1M
5
EEM icon
iShares MSCI Emerging Markets ETF
EEM
+$34.4M

Top Sells

Rank Stock Value
1
MSFT icon
Microsoft
MSFT
+$94.3M
2
JPM icon
JPMorgan Chase
JPM
+$68.2M
3
C icon
Citigroup
C
+$62.8M
4
BRK.B icon
Berkshire Hathaway Class B
BRK.B
+$50.9M
5
GLD icon
SPDR Gold Trust
GLD
+$46.3M

Sector Composition

Rank Sector Weight
1 Consumer Discretionary 0.38%
2 Technology 0.35%
3 Communication Services 0.24%
4 Healthcare 0.2%
5 Consumer Staples 0.13%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
ENOV icon
9451
Enovis
ENOV
$1.56B
– –
-1,093
Closed -$56.4K
ENPH icon
9452
Enphase Energy
ENPH
$4.84B
– –
-6,706
Closed -$1.95M
ENR icon
9453
Energizer
ENR
$1.44B
– –
-1,482
Closed -$45.5K
ENS icon
9454
PUT
EnerSys
ENS
$6.95B
– –
-400
Closed -$23K
ENSC icon
9455
CALL
Ensysce Biosciences
ENSC
$4.02M
– –
-4
Closed -$2K
ENSG icon
9456
The Ensign Group
ENSG
$10.1B
$0 ﹤0.01%
+1
New +$91
ENVA icon
9457
PUT
Enova International
ENVA
$5.91B
– –
-200
Closed -$5K
ENZL icon
9458
iShares MSCI New Zealand ETF
ENZL
$67.5M
– –
-279
Closed -$11K
EPI icon
9459
WisdomTree India Earnings Fund ETF
EPI
$2.02B
– –
-835
Closed -$25K
EPIX
9460
DELISTED
ESSA Pharma
EPIX
$0 ﹤0.01%
241
-109
-31% -$313
EPRT icon
9461
Essential Properties Realty Trust
EPRT
$6.99B
– –
-1,633
Closed -$35.6K
EQ icon
9462
Equillium
EQ
$157M
– –
-7,484
Closed -$16K
EQ icon
9463
PUT
Equillium
EQ
$157M
– –
-23,600
Closed -$52K
EQH icon
9464
Equitable Holdings
EQH
$13.1B
– –
-265
Closed -$7.84K
ERAS icon
9465
Erasca
ERAS
$6.63B
– –
-124
Closed -$841
ERII icon
9466
PUT
Energy Recovery
ERII
$434M
– –
-1,700
Closed -$36K
ERNA icon
9467
PUT
Eterna Therapeutics
ERNA
$4.58M
– –
-1
Closed -$11K
ESAB icon
9468
ESAB
ESAB
$5.25B
– –
-62
Closed -$2K
ESAB icon
9469
PUT
ESAB
ESAB
$5.25B
– –
-100
Closed -$3K
ESCA icon
9470
Escalade
ESCA
$257M
– –
-931
Closed -$9.67K
ESGE icon
9471
iShares ESG Aware MSCI EM ETF
ESGE
$6.51B
$0 ﹤0.01%
+18
New +$527
ESI icon
9472
Element Solutions
ESI
$9.12B
– –
-7,096
Closed -$128K
ESNT icon
9473
Essent Group
ESNT
$6.06B
– –
-1,785
Closed -$67.8K
ESS icon
9474
Essex Property Trust
ESS
$18.9B
– –
-6
Closed -$1.31K
ESTA icon
9475
Establishment Labs
ESTA
$2.72B
– –
-3,796
Closed -$229K
377 378
379
380 381

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Simplex Trading's Q4 2022 Portfolio in Review

As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.

Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.

By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.

  • Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
  • Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
  • Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
  • Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
  • Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
  • Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
  • Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.

Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.