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Prospect Hill Management, LLC

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13F filer, CIK 1837320, SHORT HILLS, NJ

Prospect Hill Management, LLC reported $224,370,514 across 14 holdings for the quarter ended 2026-03-31, in a 13F-HR filed 2026-05-06. Its ten largest share positions make up 98.25% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001837320-26-000002

Period
2026-03-31
Reported value
$224M
Holdings
14
Top 10 weight
98.25%
New
1
Sold out
0

Largest buys vs the previous quarter

SecurityShares changeApprox. value
PLTRnew+4,450$651K
GOOGLadded+500$144K
TSLAadded+164$61K
NFLXadded+603$58K
ISRGadded+125$57.6K

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
MAreduced-850-$425K
AXPreduced-625-$189K
AAPLreduced-500-$127K
METAreduced-25-$14.3K
NVDAreduced-21-$3.66K

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 2026

Share positions as resolved from 13F-HR 0001837320-26-000002, largest first. % of portfolio is the value over $224,370,514, 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; 2024Q2: restricted; 2024Q3: 513,836 shares; 2024Q4: 512,031 shares; 2025Q1: 512,481 shares; 2025Q2: 506,986 shares; 2025Q3: 507,076 shares; 2025Q4: 505,976 shares; 2026Q1: 505,476 shares 505,476$128M57.18%-500Timeline
TSLATESLA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 99,062 shares; 2024Q4: 99,022 shares; 2025Q1: 100,291 shares; 2025Q2: 100,317 shares; 2025Q3: 100,417 shares; 2025Q4: 100,452 shares; 2026Q1: 100,616 shares 100,616$37.4M16.67%+164Timeline
AMZNAMAZON COM INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 51,818 shares; 2024Q4: 51,718 shares; 2025Q1: 51,643 shares; 2025Q2: 51,143 shares; 2025Q3: 51,293 shares; 2025Q4: 52,693 shares; 2026Q1: 52,743 shares 52,743$11M4.9%+50Timeline
GOOGALPHABET INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 30,020 shares; 2024Q4: 30,020 shares; 2025Q1: 30,020 shares; 2025Q2: 30,020 shares; 2025Q3: 30,020 shares; 2025Q4: 30,020 shares; 2026Q1: 30,020 shares 30,020$8.61M3.84%0Timeline
GOOGLALPHABET INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 27,120 shares; 2024Q4: 27,120 shares; 2025Q1: 27,120 shares; 2025Q2: 27,120 shares; 2025Q3: 27,370 shares; 2025Q4: 27,370 shares; 2026Q1: 27,870 shares 27,870$8.01M3.57%+500Timeline
ISRGINTUITIVE SURGICAL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 14,325 shares; 2024Q4: 14,325 shares; 2025Q1: 15,125 shares; 2025Q2: 15,075 shares; 2025Q3: 14,825 shares; 2025Q4: 14,450 shares; 2026Q1: 14,575 shares 14,575$6.72M2.99%+125Timeline
NFLXNETFLIX INC.Quarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 6,181 shares; 2024Q4: 6,181 shares; 2025Q1: 6,181 shares; 2025Q2: 6,176 shares; 2025Q3: 6,191 shares; 2025Q4: 61,910 shares; 2026Q1: 62,513 shares 62,513$6.01M2.68%+603Timeline
BACBANK OF AMER CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 280,000 shares; 2024Q4: 280,000 shares; 2025Q1: 189,448 shares; 2025Q2: 117,500 shares; 2025Q3: 117,500 shares; 2025Q4: 117,500 shares; 2026Q1: 117,500 shares 117,500$5.73M2.55%0Timeline
NVDANVIDIA CORPORATIONQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 25,650 shares; 2024Q4: 25,650 shares; 2025Q1: 31,909 shares; 2025Q2: 31,534 shares; 2025Q3: 31,834 shares; 2025Q4: 31,834 shares; 2026Q1: 31,813 shares 31,813$5.55M2.47%-21Timeline
MAMASTERCARD INCORPORATEDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 7,400 shares; 2024Q4: 7,150 shares; 2025Q1: 7,150 shares; 2025Q2: 7,150 shares; 2025Q3: 7,150 shares; 2025Q4: 7,150 shares; 2026Q1: 6,300 shares 6,300$3.15M1.4%-850Timeline
TMOTHERMO FISHER SCIENTIFIC INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 3,250 shares; 2024Q4: 3,250 shares; 2025Q1: 3,250 shares; 2025Q2: 3,250 shares; 2025Q3: 3,250 shares; 2025Q4: 3,000 shares; 2026Q1: 3,000 shares 3,000$1.47M0.66%0Timeline
METAMETA PLATFORMS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 705 shares; 2024Q4: 705 shares; 2025Q1: 1,725 shares; 2025Q2: 1,725 shares; 2025Q3: 1,800 shares; 2025Q4: 2,430 shares; 2026Q1: 2,405 shares 2,405$1.38M0.61%-25Timeline
PLTRPALANTIR TECHNOLOGIES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 4,450 shares 4,450$651K0.29%newTimeline
AXPAMERICAN EXPRESS COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 875 shares; 2024Q4: 875 shares; 2025Q1: 2,000 shares; 2025Q2: 2,000 shares; 2025Q3: 2,000 shares; 2025Q4: 2,000 shares; 2026Q1: 1,375 shares 1,375$416K0.19%-625Timeline

How Q1 2026 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 0001837320-26-000002 base2026-05-06acceptance time not in the bulk data set