Behind 16th Amendment on the one-year list was Federated Hermes Inc.'s trade finance strategy, which returned a gross 7.24%. Christopher McGinley, Pittsburgh-based vice president, senior portfolio manager and head of the trade finance team at Federated Hermes, said in an interview that "trade finance" can be considered a subset of the loan market and essentially provides short-term floating rate loans that enables the flow of goods across borders.
"The overall investment philosophy of Federated Hermes places a premium on diversification and the trade finance strategy reflects that since it works as a diversified source of alpha," he said.
Mr. McGinley partly attributed the strategy's recent outperformance to the fact that it is a floating-rate product amid an environment of rapidly rising interest rates. "As a result, it has negligible interest rate risk," he added.
Miami-based Potomac Fund Management Co.'s income plus strategy ranked third, racking up a 7.21% return.
Dan Russo, a Manhasset, N.Y.-based portfolio manager at Potomac, said by email that his firm's investment philosophy is to "win by losing less."
"We believe that risk can be contained, even conquered, through the thoughtful use of objective and well-tested market indicators," he said. "These indicators are used to identify times when probabilities favor having 'risk on' and times when the risk is not worth the reward."
The income plus strategy fits this philosophy, he explained, by "using a tested set of market indicators to identify times of opportunity in the riskier parts of the fixed-income market and times when risk should be avoided and/or mitigated."
Income plus is a tactical total return strategy with the goal of providing stable and absolute returns under all market conditions, he noted. "The core position in the strategy focuses on absolute return and low daily volatility," he added. "When our indicators identify a risk-on environment, the core position seeks exposure to the high-yield bond market, the high-yield municipal market and emerging market bonds." But when the environment calls for a risk-off stance, he indicated, the core position uses "trend and momentum analysis to identify assets that may outperform in such an environment. This includes the use of cash."
The specific drivers of outperformance by the income plus strategy were derived from the fact that the firm's indicators recognized that the environment had become more risk-off, Mr. Russo added.
"This kept the main holding in the strategy from having outsized exposure to riskier pockets of the fixed-income market," he said. "At the same time, our trend and momentum analysis guided us toward exposures that benefited from higher interest and a stronger U.S. dollar. Importantly, we do not simply defer to Treasuries in a risk-off regime."
Ranked fourth on the list was Eaton Vance Management's global macro absolute return strategy, posting a 6.01% gross return.
The global macro strategy is a long/short absolute return strategy focused on sovereign or sovereign-related assets like foreign exchange, sovereign hard currency credit and local interest rates, said Kyle Lee, Boston-based portfolio manager for the strategy, in an email.
Mr. Lee said the emerging markets team's investment philosophy is that "fluctuation in sovereign risk premium is the primary driver of capital market returns over the medium to long term." Therefore, he explained, his team focuses on "deep research into individual countries' economic policies, which are the drivers of sovereign risk premium." "We look across the entire spectrum of investible countries — today approximately 130 of them — to find these opportunities, often in less efficient markets with especially high potential returns," he said.
During the one-year period ended March 31, while global capital markets were "certainly challenged," Mr. Lee said, long positions in local markets in Ukraine, Dominican Republic, and Uzbekistan were "notable drivers of performance," while short positions in the Chinese yuan and South African rand, among others, were "all key contributors to returns."
Ukrainian local assets, he added, rebounded off of their lows following Russia's invasion, while the Dominican Republic and Uzbekistani markets "both benefited from sound monetary policy and its impact on inflation."
BNP Paribas Asset Management's mortgage alpha strategy posted the fifth-best performance among domestic-fixed income vehicles for the year ended March 31, delivering a gross return of 5.41%.
Matt Slootsky, New York-based portfolio manager at BNP Paribas, said in an interview that the strategy focuses on agency mortgage-backed securities and that the team seeks "to generate excess returns by capitalizing upon inefficiencies in the MBS market, leveraging our views on prepayments, volatility and risk."
Thomas J. Herzfeld Advisors' tax-exempt composite strategy was in sixth place with a 4.48% gross return. This strategy also showed up as the fifth-best performer for the five-year period ended March 31, delivering an annualized gross return of 6.66%.
Another Herzfeld strategy, the Herzfeld fixed-income composite, occupied the third spot on the five-year list, returning a gross annualized 6.81%.
Erik Herzfeld, Miami Beach, Fla.-based president and portfolio manager, said his firm takes a contrarian investment approach, seeking out "undiscovered value" assets that are not properly valued based on their true fundamentals.
With respect to the Herzfeld tax-exempt composite strategy, which invests in municipal bonds, Mr. Herzfeld said the team was overweight in floating-rate bonds for most of 2022, and then rotated back into fixed-rate exposure earlier this year "as yields became the most attractive in years."
The Herzfeld fixed-income composite was a similar story — the theme was focusing on locking in high rates.
"Floating-rate credit exposure, such as the lower tranches of (collateralized loan obligations), served us well in 2022 but we were looking to lock in high rates as the Fed approached the end of its tightening cycle," Mr. Herzfeld said.
For the five years ended March 31, four of the top 10 strategies fell within Morningstar's high-yield bond category.
Rounding out the five-year list, behind 16th Amendment's 40.84% gross annualized return for its Vicksburg strategy, was Hi-Line Capital Management's income advantaged strategy, returning a gross annualized 8.52%. In fourth place was Wellington Management Co.'s credit total return strategy, returning 6.75%.
For the five years ended March 31, the median annualized return in Morningstar's domestic fixed-income universe was 1.91%, while the Bloomberg U.S. Aggregate Bond index returned an annualized 0.9% for the period.