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Prospect Hill Management, LLC

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13F filer, CIK 1837320, SHORT HILLS, NJ

Prospect Hill Management, LLC reported $192,049,702 across 15 holdings for the quarter ended 2025-03-31, in a 13F-HR filed 2025-05-05. Its ten largest share positions make up 97.41% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001837320-25-000007

Period
2025-03-31
Reported value
$192M
Holdings
15
Top 10 weight
97.41%
New
0
Sold out
1

Largest buys vs the previous quarter

SecurityShares changeApprox. value
NVDAadded+6,259$678K
METAadded+1,020$588K
ISRGadded+800$396K
TSLAadded+1,269$329K
AXPadded+1,125$303K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
BACreduced-90,552-$3.78M
MSFTexited-750-$316K
NXPIreduced-100-$19K
AMZNreduced-75-$14.3K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q1 2025

Share positions as resolved from 13F-HR 0001837320-25-000007, largest first. % of portfolio is the value over $192,049,702, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
AAPLAPPLE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 513,836 shares; 2024Q4: 512,031 shares; 2025Q1: 512,481 shares 512,481$114M59.27%+450Timeline
TSLATESLA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 99,062 shares; 2024Q4: 99,022 shares; 2025Q1: 100,291 shares 100,291$26M13.53%+1,269Timeline
AMZNAMAZON COM INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 51,818 shares; 2024Q4: 51,718 shares; 2025Q1: 51,643 shares 51,643$9.83M5.12%-75Timeline
BACBANK OF AMER CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 280,000 shares; 2024Q4: 280,000 shares; 2025Q1: 189,448 shares 189,448$7.91M4.12%-90,552Timeline
ISRGINTUITIVE SURGICAL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 14,325 shares; 2024Q4: 14,325 shares; 2025Q1: 15,125 shares 15,125$7.49M3.9%+800Timeline
NFLXNETFLIX INC.Quarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 6,181 shares; 2024Q4: 6,181 shares; 2025Q1: 6,181 shares 6,181$5.76M3%0Timeline
GOOGALPHABET INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 30,020 shares; 2024Q4: 30,020 shares; 2025Q1: 30,020 shares 30,020$4.69M2.44%0Timeline
GOOGLALPHABET INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 27,120 shares; 2024Q4: 27,120 shares; 2025Q1: 27,120 shares 27,120$4.19M2.18%0Timeline
MAMASTERCARD INCORPORATEDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 7,400 shares; 2024Q4: 7,150 shares; 2025Q1: 7,150 shares 7,150$3.92M2.04%0Timeline
NVDANVIDIA CORPORATIONQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 25,650 shares; 2024Q4: 25,650 shares; 2025Q1: 31,909 shares 31,909$3.46M1.8%+6,259Timeline
TMOTHERMO FISHER SCIENTIFIC INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 3,250 shares; 2024Q4: 3,250 shares; 2025Q1: 3,250 shares 3,250$1.62M0.84%0Timeline
NXPINXP SEMICONDUCTORS N VQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 6,135 shares; 2024Q4: 6,135 shares; 2025Q1: 6,035 shares 6,035$1.15M0.6%-100Timeline
METAMETA PLATFORMS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 705 shares; 2024Q4: 705 shares; 2025Q1: 1,725 shares 1,725$994K0.52%+1,020Timeline
ARMARM HOLDINGS PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 4,595 shares; 2024Q4: 4,601 shares; 2025Q1: 6,339 shares 6,339$677K0.35%+1,738Timeline
AXPAMERICAN EXPRESS COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 875 shares; 2024Q4: 875 shares; 2025Q1: 2,000 shares 2,000$538K0.28%+1,125Timeline

Sold out in Q1 2025

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
MSFTMICROSOFT CORP750$316Kshares

How Q1 2025 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001837320-25-000007 base2025-05-05acceptance time not in the bulk data set