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MARKETABLE SECURITIES
 12 Months Ended
Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract]  
MARKETABLE SECURITIES MARKETABLE SECURITIES
The amortized cost and fair value of marketable securities as of the dates indicated below were as follows:
As of June 30, 2023 (In thousands)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair Value
Corporate debt securities$508,511 $52 $(5,913)$502,650 
Money market funds and other1,257,223 — — 1,257,223 
Municipal securities32,525 — (737)31,788 
U.S. Government agency securities134,486 4 (918)133,572 
U.S. Treasury securities538,487 10 (8,782)529,715 
Equity securities(1)
3,211 14,948 — 18,159 
Subtotal2,474,443 15,014 (16,350)2,473,107 
Add: Time deposits(2)
471,439 — — 471,439 
Less: Cash equivalents1,629,248 4 — 1,629,252 
Marketable securities$1,316,634 $15,010 $(16,350)$1,315,294 
As of June 30, 2022 (In thousands)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair Value
Corporate debt securities$481,881 $3 $(8,915)$472,969 
Money market funds and other948,027 — — 948,027 
Municipal securities61,973 — (1,249)60,724 
Sovereign securities6,041 2 (53)5,990 
U.S. Government agency securities92,273 26 (1,183)91,116 
U.S. Treasury securities378,871 18 (8,378)370,511 
Equity securities(1)
3,211 7,824 — 11,035 
Subtotal1,972,277 7,873 (19,778)1,960,372 
Add: Time deposits(2)
274,873 — — 274,873 
Less: Cash equivalents1,112,146 — (1)1,112,145 
Marketable securities$1,135,004 $7,873 $(19,777)$1,123,100 
__________________ 
(1)Unrealized gains on equity securities included in our portfolio include the initial fair value adjustment recorded upon a security becoming marketable.
(2)Time deposits excluded from fair value measurements. 
Our investment portfolio includes both corporate and government securities that have a maximum maturity of three years. The longer the duration of these securities, the more susceptible they are to changes in market interest rates and bond yields. As yields increase, those securities with a lower yield-at-cost show a mark-to-market unrealized loss. Most of our unrealized losses are due to changes in market interest rates, and bond yields. We believe that we have the ability to realize the full value of all of these investments upon maturity. As of June 30, 2023, we had 494 investments in an unrealized loss position. The following table summarizes the fair value and gross unrealized losses of our investments that were in an unrealized loss position as of the dates indicated below:
As of June 30, 2023Less than 12 Months12 Months or GreaterTotal
(In thousands)Fair ValueGross
Unrealized
Losses		Fair ValueGross
Unrealized
Losses		Fair ValueGross
Unrealized
Losses
Corporate debt securities$310,613 $(2,242)$161,263 $(3,671)$471,876 $(5,913)
Municipal securities9,011 (199)17,253 (538)26,264 (737)
U.S. Government agency securities80,793 (459)36,406 (459)117,199 (918)
U.S. Treasury securities288,376 (4,117)183,475 (4,665)471,851 (8,782)
Total$688,793 $(7,017)$398,397 $(9,333)$1,087,190 $(16,350)

As of June 30, 2022 (In thousands)
Fair Value(1)
Gross
Unrealized
Losses(1)
Corporate debt securities$458,699 $(8,915)
Municipal securities58,722 (1,249)
Sovereign securities2,963 (53)
U.S. Government agency securities60,285 (1,183)
U.S. Treasury securities336,819 (8,378)
Total$917,488 $(19,778)
_________________ 
(1)As of June 30, 2022, our investments that were in a continuous loss position of 12 months or more, as well as the unrealized losses on those investments, were immaterial.
The contractual maturities of securities classified as available-for-sale, regardless of their classification on our Consolidated Balance Sheets, as of the date indicated below were as follows:
As of June 30, 2023 (In thousands)Amortized
Cost		Fair Value
Due within one year$704,633 $713,189 
Due after one year through three years612,001 602,105 
$1,316,634 $1,315,294 
Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Realized gains and losses on available for sale securities were immaterial for the fiscal years ended June 30, 2023, 2022 and 2021.