Foreign investors' share of Russian debt has been on decline for months and its slide accelerated recently amid intensified fears of fresh US sanctions against Moscow.
"The largest exodus (of foreign investors) from the Russian market was observed on particular days with increased volatility due to geopolitical risks," the central bank said in a report on financial markets.
In an effort to force Veolia to negotiate, the Suez board has set up a Dutch foundation to prevent the sale of French water assets that its rival would need to divest to win antitrust approval to buy Suez.
Suez also proposed last month to negotiate a takeover if the two companies agreed on the sale of most of Suez's French assets to investment funds Ardian and Global Infrastructure Partners (GIP).
"Wall Street's near-record year shattered all expectations," New York State Comptroller Thomas DiNapoli said.
"The early forecast of a disastrous year for financial markets was sharply reversed by a boom in underwriting activity, historically low interest rates, and surges in trading spurred by volatile markets," he added.