A Bank of Japan policy review due in March is likely to result in tweaks, rather than any big changes, though more flexibility in the bank’s buying of equities is seen as a likely adjustment, according to economists.

About two-thirds of 44 analysts surveyed by Bloomberg said the assessment will yield no more than fine-tuning. Some 11% expect more drastic changes, while another 23% said the results are hard to predict.

BOJ Gov. Haruhiko Kuroda has a history of delivering surprises, so investors have been left guessing about what the policy assessment announced last month will deliver, if anything.