PlanB, the brainchild behind the Bitcoin stock-to-flow model, has revealed he is feeling “uneasy” about his renowned price predictions due to the recent downtrend in markets.

The stock-to-flow (S2F) model, which has predicted Bitcoin (BTC) prices with some degree of accuracy over the past two years, has been called into question by some of PlanB’s followers in a recent Twitter poll.

The anonymous analyst surveyed his followers on Monday, asking them what price they thought BTC would reach by the end of the year. He used the results to compare them to a similar survey in March when market sentiment was overwhelmingly bullish.

Of the 124,595 respondents to the latest poll, 41% thought that BTC prices would remain below $100,000 by the end of the year, which would invalidate the S2F model. That’s two and a half times the 16% in the previous poll who thought the lazer-eyes crowd would be disappointed this year.

PlanB, who originally published the price predictor in March 2019, pinned a message admitting that even he feels a little “uneasy” when BTC prices deviate from the model. However, the analyst noted that the model had managed to hold previously in March 2019, again in March 2020 when the pandemic caused a global market meltdown, and once more in September 2020.

Preston Pysh, founder of The Investors Podcast Network, commented that it was difficult for a model to account for a blizzard of bad news that has accelerated the market downturn.

“You mean your model doesn’t account for 40%+ of mining rigs getting banned & forced to turn-off & relocate to various parts of the world...and with no forward notice to companies/entitles for the extraordinary expense to their heavily denominated BTC treasuries/retained earnings.”

The model is a calculation of a ratio based on the existing supply of Bitcoin against how much is entering circulation. The scarcer the asset becomes due to the four-year halving cycles, the higher the price. PlanB’s model predicts an average price of $288,000 over the next three years.

Related: $288K BTC price 'still in play' says PlanB as Bloomberg champions Bitcoin halving

At the time of writing, Bitcoin gained 2.9% over the past 24 hours to trade at $34,450 according to CoinGecko. The asset is currently 45% down from its all-time high of $64,800 on April 14.