I see your point, but while the halving schedule is known in advance and partially priced in, market reactions still vary with each cycle due to new participants, macroeconomic conditions, and changing demand.
Agree. Halvings are only one ingredient of Bitcoin's price proposition. Thats why I wrote "partly". The "future value expectation" does of course include also a theory/speculation about Bitcoin adoption, apart from "supply scarcity".
If halvings were fully priced in from the start, we wouldn’t see the typical post-halving rallies.
The psychological and economic effects of a decreasing supply over time seem to still play a significant role.
My opinion is that the individual halvings aren't that important for their direct effect on the Bitcoin supply. Each day,
hundreds of thousands of Bitcoins are traded on exchanges (300,000 approx in the last 24 hours according to CoinGecko). Miners now generate 450 Bitcoins per day, a supply inflation of 0.002%/day, 0.06%/month and 0.8%/year. In the previous halving cycle the values were twice as high, but for me, at least since 2020 the differences between halving cycles are negligible due to the enormous size of the market. De facto, Bitcoin has already a static supply if we take into account lost coins.
I agree about the psychologic effect though. It is very tempting to think that "45 million USD (450 * 100,000) less needs to be injected each day to keep Bitcoins price stable" really makes a difference on the supply/demand equilibrium. The point is however that the market is huge now, and demand fluctuations due to FOMO and fear are
much stronger than these 45 million USD/day.
In addition, the existence of a "post-halving rally" effect for me is still not confirmed. We had strong rallys in 2019 and late 2023 which were unrelated to any halvings. And the late 2024/2025 rally was mostly news-driven, 2017/18 probably was fueled at least in part by Ethereum's ICO bubble.