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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
TIXT
10426
DELISTED
TELUS International
TIXT
– –
-100
Closed -$2.21K
TJX icon
10427
TJX Companies
TJX
$169B
– –
-11,466
Closed -$847K
TLPH icon
10428
CALL
Talphera
TLPH
$67.5M
– –
-595
Closed -$2K
TLPH icon
10429
Talphera
TLPH
$67.5M
$0 ﹤0.01%
62
-65
-51% -$183
TLS icon
10430
Telos
TLS
$333M
– –
-970
Closed -$6.42K
TLS icon
10431
PUT
Telos
TLS
$333M
– –
-3,300
Closed -$29K
TLSA icon
10432
Tiziana Life Sciences
TLSA
$116M
$0 ﹤0.01%
+465
New +$308
TLYS icon
10433
Tilly's
TLYS
$116M
– –
-2,030
Closed -$17.8K
TMQ
10434
CALL
Trilogy Metals
TMQ
$548M
– –
-2,100
Closed -$1K
TNET icon
10435
CALL
TriNet
TNET
$2.77B
– –
-100
Closed -$7K
TNL icon
10436
Travel + Leisure Co
TNL
$4.53B
– –
-1,168
Closed -$43.8K
TNYA icon
10437
Tenaya Therapeutics
TNYA
$171M
– –
-3,000
Closed -$7.32K
TOKE
10438
DELISTED
Cambria Cannabis ETF
TOKE
$0 ﹤0.01%
+100
New +$720
TPOR icon
10439
Direxion Daily Transportation Bull 3X ETF
TPOR
$19.6M
– –
-22
Closed –
TPVG icon
10440
TriplePoint Venture Growth BDC
TPVG
$181M
– –
-1,648
Closed -$19.9K
TRAK icon
10441
CALL
ReposiTrak
TRAK
$143M
– –
-2,700
Closed -$14K
TREX icon
10442
Trex
TREX
$4.4B
– –
-10,383
Closed -$471K
TRMK icon
10443
CALL
Trustmark
TRMK
$2.68B
– –
-2,100
Closed -$64K
TROW icon
10444
T. Rowe Price
TROW
$24.6B
– –
-7,333
Closed -$830K
TROX icon
10445
Tronox
TROX
$1.04B
– –
-6,885
Closed -$91.6K
TROO icon
10446
TROOPS Inc
TROO
$247M
– –
-1,665
Closed -$2.99K
TRST
10447
PUT
Trustco Bank Corp NY
TRST
$974M
– –
-1,900
Closed -$59K
TRVI icon
10448
Trevi Therapeutics
TRVI
$2.47B
$0 ﹤0.01%
+10
New +$20
TRVG
10449
trivago
TRVG
$363M
– –
-35,940
Closed -$221K
TRX icon
10450
TRX Gold Corp
TRX
$264M
$0 ﹤0.01%
+100
New +$37
416 417
418
419 420

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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.