The Hot 100 uses sales from Hot Digital Songs. That's why some tracks fall off the Hot 100 altogether during release week (complete my album).

• Diana - #11 on Hot 100 and #11 on Hot Digital Songs.
• Midnight Memories - #12 on Hot 100 and #18 on Hot Digital Songs.

Streaming clearly played a huge part as there's no airplay to speak of.

 

Yeah, it used to be like that, but they must have changed it recently. What happened to Mirrors, Hold On We're Going Home, Wrecking Ball, etc. on their album release weeks means they don't subtract Complete My Album for the Hot 100 anymore.

 

I don't think it's streaming for the One Direction promo singles. I know they're popular, but they wouldn't get streamed that much. Also, they both went to #1 on iTunes with massive leads, so they'd obviously have been much higher on Hot Digital Songs without the complete my album sales taken off them.

Yeah, it used to be like that, but they must have changed it recently. What happened to Mirrors, Hold On We're Going Home, Wrecking Ball, etc. on their album release weeks means they don't subtract Complete My Album for the Hot 100 anymore.

Complete my album (CMA) will take effect for One Direction in the chart announced on Thursday.

 

And they do subtract for the Hot 100, it just has less of an effect because of streaming.

 

And I think we've had some weird CMA effects recently because iTunes has released albums earlier than it should resulting in the effect rolling into the week before.

• iTunes releases an album 5 minutes after midnight (0:05 am on Monday) - CMA occurs in the correct tracking week.
• iTunes release an album 5 minutes before midnight (11:55pm on Sunday) - CMA occurs in the wrong week.

I'm pretty sure this is what happened to Lady GaGa when Applause sold 4,000 the week before the album was released. I read comments that people saw the album early on iTunes.

 

 

^ What happened to Lady Gaga is the same as what happened to One Direction. They had the Complete My Album effect applied to them this week instead of next week (like it would normally be). One Direction would've been #1 and #2 on Hot Digital Songs otherwise.

 

I just realized that Billboard publish a Streaming chart, so you can check for yourself that the One Direction songs didn't get much streaming. The only explanation for the charting of Mirrors, Hold On We're Going Home, Wrecking Ball, and now these One Direction songs is that they don't subtract CMA sales anymore for the Hot 100 imo.