Pinned straw:
Further to what is making CBA (and the other big three to a lesser extent) run so hard: I watched an interview by Rask with Nathan Bell (of Intelligent Investor, manages the IIFs) and Nathan was bemoaning how he couldn't bring himself (via his income fund) to hold the banks earlier in the year and so has underperformed significantly, purely because of that.
Because of that, he went looking for data on who was buying our Big 4 Bank shares (Cumulative Net Purchases). His data (below) came either from Shaw and Partners or Macquarie (I can't remember but it was one or the other) and it tracks three groups - Australian retail investors, Australian institutions and International institutions - buying the banks back to 2001.
Nathan's explanation for the increased buying from Australian institutions was that they're being drawn into it because of fund managers having to cover their returns against benchmark and also ETF managers having to continually buy.
His explanation for the increased buying from International Institutions was that a lot of money has been and still is fleeing China, and needs somewhere "safe" to go, and at least for the short term, the international fund managers involved are not so much concerned with returns as with financial stability = safety and capital preservation.
For that, CBA and our big banks are viewed (rightly or wrongly) as the perfect place to park the funds while they find some better-returning but safe place to put them or wait out the current global issues.
I found the explanation interesting and have to wonder what it means for this crazy bank rally when those international fund managers do find viable investments with better returns and reallocate their funds.
I do think the limited supply is one significant driver. I've held CBA in my SMSF for yonks, and now the SMSF is in pension mode and 0% tax, I've been selling off in tranches. First tranche went at $140 - actually sold at $143 once the order went through! Second tranche I had planned to execute at $144 - by the time I returned from OS (only away for 2 weeks), it went for $158! Waiting to see where it goes before I pull the lever for the third and last tranche. Doing much the same for the other three big banks as well. BUT according to my financial advisor, I'm in the minority. He had two separate clients in the last week who, when he gently suggested selling CBA would be a good idea because they needed the cash and are also in the 0% tax situation, both swore they were dying with those shares. Why??? But there you are. Boomers who bought at the float seem determined to cling to those shares forever. Well...I have to admit I'll still be holding some, but a much much smaller number.
Discl: All 4 big banks still held IRL - but only in SMSF for for the dividend
One theory I have a bit of trouble getting on board with is that passive money alone is driving the CBA share price to ATHs. If that were the case, why isn't CSL, BHP, etc., in fact, all of the ASX200, which all get passive flows at ATH? IMO, the issue is with the supply side, not the demand side. Im a holder of CBA, have been for decades, which means a big CGT liability on sale. CBA has a high retail skew, as opposed to other large-cap stocks, in this case, it restricts supply. to be clear, i would sell the lot if the tax bill was lower, so now i dribble them out. i suspect many are in the same place, or the usual retail strategy, its going up hold on. those of us who believe valuations win in the end (although that may be a long road in some cases), wouldn't go near it. there are a few others for different reasons as well. perversely bad news could have a bigger counter impact.
held --maybe i can do a synthetic that locks in today's price and sells some every year so it spreads the tax over many years.