Institutional Manager · CIK 0002051999
Prime Buchholz LLC
PORTSMOUTH, NH · File #028-24698
Latest AUM
$168.4M
Positions
20
Top-10 Concentration
89.8%
Filings
5
Portfolio Value Over Time
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| REDUCE | Blackrock | 46429B747 | -57,956 | -$5.9M | -$155,045 |
| REDUCE | The Vanguard Group | 922908637 | -16,407 | -$5.2M | +$270,237 |
| REDUCE | The Vanguard Group | 921943858 | -26,397 | -$1.6M | +$1.1M |
| REDUCE | The Vanguard Group | 922908363 | -1,486 | -$931,999 | +$78,724 |
| REDUCE | The Vanguard Group | 921937835 | -12,021 | -$890,396 | -$14,850 |
| REDUCE | The Vanguard Group | 921910733 | -6,991 | -$845,634 | +$454,772 |
| REDUCE | The Vanguard Group | 921910725 | -10,230 | -$732,674 | +$652,335 |
| REDUCE | The Vanguard Group | 922908652 | -3,275 | -$684,868 | -$10,667 |
| REDUCE | The Vanguard Group | 922042858 | -9,778 | -$525,666 | -$112,413 |
| REDUCE | The Vanguard Group | 921909768 | -6,214 | -$468,785 | +$393,580 |
Filing History
- 13F HOLDINGS REPORTQ/E Dec 202520 pos · $168.4M
- 13F HOLDINGS REPORTQ/E Sep 202520 pos · $181.9M
- 13F HOLDINGS REPORTQ/E Jun 202523 pos · $313.1M
- 13F HOLDINGS REPORTQ/E Mar 202523 pos · $286.2M
- 13F HOLDINGS REPORTQ/E Dec 202431 pos · $306.5M
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | The Vanguard Group | 921943858 | 414,194 | $25.9M | 15.36% |
| 2 | Blackrock | 46434G764 | 319,235 | $23.2M | 13.77% |
| 3 | The Vanguard Group | 921910733 | 173,448 | $21.0M | 12.46% |
| 4 | The Vanguard Group | 921910725 | 279,700 | $20.0M | 11.89% |
| 5 | The Vanguard Group | 921909768 | 192,540 | $14.5M | 8.62% |
| 6 | The Vanguard Group | 922042858 | 257,887 | $13.9M | 8.23% |
| 7 | Blackrock | 46429B747 | 101,914 | $10.4M | 6.19% |
| 8 | The Vanguard Group | 922908652 | 45,210 | $9.5M | 5.61% |
| 9 | The Vanguard Group | 922908637 | 22,532 | $7.1M | 4.21% |
| 10 | Blackrock | 46434V647 | 235,330 | $5.9M | 3.49% |
| 11 | The Vanguard Group | 92206C706 | 54,596 | $3.3M | 1.94% |
| 12 | The Vanguard Group | 921937835 | 37,483 | $2.8M | 1.65% |
| 13 | The Vanguard Group | 922908363 | 3,818 | $2.4M | 1.42% |
| 14 | Blackrock | 464288224 | 144,912 | $2.4M | 1.41% |
| 15 | SSIM | 78463X855 | 30,546 | $2.1M | 1.27% |
| 16 | The Vanguard Group | 922908553 | 20,265 | $1.8M | 1.06% |
| 17 | Blackrock | 464287374 | 20,257 | $1.0M | 0.60% |
| 18 | The Vanguard Group | 922042742 | 4,241 | $598,291 | 0.36% |
| 19 | Blackrock | 464287507 | 6,950 | $458,707 | 0.27% |
| 20 | Dimensional Fund Advisors | 25434V690 | 6,814 | $291,946 | 0.17% |