Simple interest calculated on an actual - over-360-day basis paid at maturity, or semi-annually when original maturity is greater than one year (public.websteronline.com)
Cash and cash equivalents - The Company defines its cash and cash equivalents to include only cash on hand and investments with original maturities of ninety days or less. (sec.gov)
SHYL holds bonds with remaining maturities anywhere between zero and five years, although the original maturity must have been no greater than 15 years. (etf.com)