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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
VXF icon
10551
Vanguard Extended Market ETF
VXF
$30.5B
– –
-8
Closed -$1K
VYM icon
10552
Vanguard High Dividend Yield ETF
VYM
$80.6B
– –
-11,859
Closed -$1.13M
VYNE icon
10553
VYNE Therapeutics
VYNE
$29.6M
– –
-1
Closed –
WAT icon
10554
Waters Corp
WAT
$37.3B
– –
-3,837
Closed -$1.21M
WBA
10555
DELISTED
Walgreens Boots Alliance
WBA
– –
-134,749
Closed -$5.07M
WBX
10556
CALL
Wallbox
WBX
$90M
– –
-2,355
Closed -$371K
WD icon
10557
CALL
Walker & Dunlop
WD
$1.6B
– –
-1,200
Closed -$100K
WDFC icon
10558
WD-40
WDFC
$3.11B
– –
-566
Closed -$94.4K
WEAV icon
10559
CALL
Weave Communications
WEAV
$488M
– –
-600
Closed -$3K
WEBS icon
10560
Direxion Daily Dow Jones Internet Bear 3X ETF
WEBS
$9.08M
– –
-6
Closed -$2K
WEC icon
10561
WEC Energy
WEC
$37B
– –
-301
Closed -$27.8K
WERN icon
10562
Werner Enterprises
WERN
$2.69B
– –
-1,664
Closed -$67.8K
WEN icon
10563
Wendy's
WEN
$1.36B
– –
-42,780
Closed -$914K
WFG icon
10564
PUT
West Fraser Timber
WFG
$5.19B
– –
-2,400
Closed -$173K
WGMI icon
10565
CoinShares ETF Trust CoinShares Bitcoin Mining ETF
WGMI
$275M
– –
-423
Closed -$2.67K
WGS icon
10566
CALL
GeneDx Holdings
WGS
$1.88B
– –
-506
Closed -$14K
WH icon
10567
CALL
Wyndham Hotels & Resorts
WH
$5.54B
– –
-1,300
Closed -$79K
WIMI
10568
WiMi Hologram Cloud
WIMI
$21.5M
$0 ﹤0.01%
+99
New +$945
WIT icon
10569
Wipro
WIT
$17.9B
$0 ﹤0.01%
174
-1,440
-89% -$3.44K
WK icon
10570
Workiva
WK
$2.91B
– –
-20
Closed -$1.55K
WKEY
10571
PUT
WISeKey
WKEY
$75.1M
– –
-680
Closed -$2K
WKC icon
10572
World Kinect Corp
WKC
$1.88B
– –
-456
Closed -$12.2K
WKC icon
10573
PUT
World Kinect Corp
WKC
$1.88B
– –
-1,700
Closed -$39K
WKSP icon
10574
Worksport
WKSP
$9.65M
– –
-443
Closed -$7.22K
WLKP icon
10575
Westlake Chemical Partners
WLKP
$784M
– –
-2,999
Closed -$68K
421 422
423
424 425

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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.