UPDATE 1-U.S. dollar net long bets slip, bitcoin futures surge-CFTC, Reuters data

(Adds table, details on bitcoin futures) NEW YORK, May 20 (Reuters) - Speculators' net long positioning on the U.S. dollar slipped, after hitting their highest level since late November in the previous week, according to calculations by Reuters and U.S. Commodity Futures Trading Commission data released on Friday. The value of the net long dollar position drifted lower to $19.75 billion in the week ended May 17, from $19.82 billion the previous week. The dollar has been underpinned overall in recent months by safe-haven bids amid soaring inflation, a hawkish Federal Reserve and the Russia-Ukraine conflict. That rally, however, fizzled this week due to increased volatility in global financial markets after the lofty levels the dollar had scaled in recent months. Bitcoin futures, on the other hand, posted their largest net long position since the contract was launched in 2018. For the week of May 17, net longs in bitcoin rose to 806 contracts, compared with net longs of 703 contracts the previous week, CFTC data showed. Bitcoin BTC=BTSP, the largest cryptocurrency by market value, last fell 3.6% to $29,203, not far from a December 2020 low of $25,400 it hit a few weeks ago. Japanese Yen (Contracts of 12,500,000 yen) $9.884 billion 17 May 2022 Prior week week Long 12,113 11,196 Short 114,422 121,650 Net -102,309 -110,454 EURO (Contracts of 125,000 euros) $-2.681 billion 17 May 2022 Prior week week Long 230,770 228,230 Short 210,431 211,701 Net 20,339 16,529 POUND STERLING (Contracts of 62,500 pounds sterling) $6.186 billion 17 May 2022 Prior week week Long 26,613 29,469 Short 105,854 109,067 Net -79,241 -79,598 SWISS FRANC (Contracts of 125,000 Swiss francs) $2.088 billion 17 May 2022 Prior week week Long 5,240 4,727 Short 21,832 20,490 Net -16,592 -15,763 CANADIAN DOLLAR (Contracts of 100,000 Canadian dollars) $1.132 billion 17 May 2022 Prior week week Long 36,069 38,679 Short 50,565 44,086 Net -14,496 -5,407 AUSTRALIAN DOLLAR (Contracts of 100,000 Aussie dollars) $3.138 billion 17 May 2022 Prior week week Long 41,473 36,869 Short 86,115 78,583 Net -44,642 -41,714 MEXICAN PESO (Contracts of 500,000 pesos) $-0.708 billion 17 May 2022 Prior week week Long 77,819 63,921 Short 49,604 47,196 Net 28,215 16,725 NEW ZEALAND DOLLAR (Contracts of 100,000 New Zealand dollars) $1.13 billion 17 May 2022 Prior week week Long 14,998 15,203 Short 32,765 28,199 Net -17,767 -12,996 (Reporting by Gertrude Chavez-Dreyfuss; Editing by Ken Ferris)