avoid a lot of the damage by duration matching of assets and liabilities Respectfully, you have misunderstood the situation. This has almost nothing to do wit

avoid a lot of the damage by duration matching of assets and liabilities Respectfully, you have misunderstood the situation. This has almost nothing to do with duration matching assets and liabilities. That's how it works on the loan portfolio side of a bank. This has to do with how bonds work. If you buy $10MM of a bond with a 3% coupon and rates for the same duration bond go to 5% then you have a significant capital loss. Depending on how you classified the investment under FASB 115 rules (HTM, AFS, Trading) you can telegraph to the market that your capital situation is dire which can then cause a run on the bank as we've seen multiple times in the last several weeks.