** Shares of navigation device maker Garmin GRMN.N rise 15.6% to $250.81 premarket after co forecasts annual revenue and profit above estimates
** GRMN the top gainer among S&P 500 companies premarket
** Co sees 2026 adj EPS of $9.35 vs analysts' average estimate of $8.70; forecasts 2026 revenue of $7.9 bln vs analysts' estimate of $7.63 bln - data compiled by LSEG
** Attributes upbeat forecast to strong demand for high-end wearables and fitness products
** Co beats profit estimates for third straight quarter - LSEG
** 4 of 9 brokerages rate the stock "sell", 3 "hold" and 2 "buy" or higher; their median PT is $215.57
** GRMN stock up 7% YTD, while S&P 500 .SPX down 0.03%
(Reporting by Utkarsh Tushar Hathi)
((utkarshtushar.hathi@thomsonreuters.com))