I compared the October 17th tickers in SIP and gtr1. Out of 4683 tickers (exchange-listed, with a recent 10Q, and [Sales Q1]>0), there are only 9 tickers in SIP that are not in gtr1. There are 65 tickers that match but handle punctuation differently (e.g. BRK.B BRK-B).

There are 6717 SIP tickers.
5289 are Exchange listed (1425 are Over the counter, 3 are NA Exchange).
Of these, 4697 have [Sales Q1] > 0.
Of these, 4683 issued a 10Q within the last year.
Of these, 4674 SIP tickers match gtr1 tickers (after 65 changes), with only 9 not matching.
Of these, 4207 have matching 10Q dates in SIP and gtr1.

The most recent 10Q date is 20240930 in SIP , and 20240830 in gtr1. For now, I plan on using gtr1 for backtests, and RunRadis for picks.

(To see the most recent 10Q date in gtr1: Run Screener and convert perendq1.s to a calendar date. For example:

perendq1.s    date
  26035     20240731
  26057     20240830
  26078     20240930

gtr1.net: GTR1 Backtester - checkQ1End )

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65 tickers changed:

SIPticker  gtr1Ticker
  AGM.A      AGM-A
  AKO.A      AKO-A
  AKO.B      AKO-B
  ARTN.A     ARTNA
  BATR.A     BATRA
  BATR.K     BATRK
  BELF.A     BELFA
  BELF.B     BELFB
  BF.A        BF-A
  BF.B        BF-B
    BH        BH-B
  BH.A        BH-A
  BIO.B      BIO-B
  BRK.A      BRK-A
  BRK.B      BRK-B
  CENT.A     CENTA
  CIG.C      CIG-C
  CRD.A      CRD-A
  CRD.B      CRD-B
  CRES.Y     CRESY
  CWEN       CWEN-C
  CWEN.A     CWEN-A
  DGIC.A     DGICA
  DGIC.B     DGICB
  FATB.B     FATBB
  FCNC.A     FCNCA
  FORT.Y     FORTY
  FWON.A     FWONA
  FWON.K     FWONK
  GEF.B      GEF-B
  GRP.U        GRP
  GTN.A      GTN-A
  HEI.A      HEI-A
  HVT.A      HVT-A
  IMKT.A     IMKTA
  KELY.A     KELYA
  KELY.B     KELYB
  LBRD.A     LBRDA
  LBRD.K     LBRDK
  LBTY.A     LBTYA
  LBTY.B     LBTYB
  LBTY.K     LBTYK
  LEN.B      LEN-B
  LGF.A      LGF-A
  LGF.B      LGF-B
  LILA.K     LILAK
  MARP.S     MARPS
  METC.B     METCB
  MKC.V      MKC-V
  MOG.A      MOG-A
  MOG.B      MOG-B
  PARA.A     PARAA
  QRTE.A     QRTEA
  QRTE.B     QRTEB
  RBCA.A     RBCAA
  RUSH.A     RUSHA
  RUSH.B     RUSHB
  RYAA.Y     RYAAY
  SENE.A     SENEA
  SENE.B     SENEB
  SNFC.A     SNFCA
  TAP.A      TAP-A
  UONE.K     UONEK
  VLGE.A     VLGEA
  WSO.B      WSO-B

9 SIP tickers not found in gtr1: AVAL, CHSN, CICB, FMX, GENE, IAC, PSNY.W, SQSP, UHAL.B