% of shares outstanding not shown: no SEC cover-page share count falls within 120 days of the 2026-Q1 quarter end, so any percentage would rest on a count that cannot speak for this quarter. Holder share counts are shown as filed.
Crowding percentile withheld — no market cap for NMB in the served universe — the cohort is size-matched, and an unmatched percentile would compare a micro-cap register to a mega-cap one.
| # | Holder | Shares | Value | % of shares out | Δ QoQ |
|---|---|---|---|---|---|
| 1 | Simplify Asset Management Inc. | 1,553,3761.6M | $38M | — | — |
| 2 | JPMORGAN CHASE & CO | 154,826154,826 | $4M | — | TRIM -5% |
| 3 | PRINCIPAL SECURITIES, INC. | 29,85229,852 | $721,235 | — | ADD 124% |
| 4 | ENVESTNET ASSET MANAGEMENT INC | 28,34128,341 | $684,736 | — | ADD 135% |
| 5 | ROYAL BANK OF CANADA | 379379 | $9,000 | — | TRIM -94% |
Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.
| Holder | 2024-Q4 | 2025-Q1 | 2025-Q2 | 2025-Q3 | 2025-Q4 | 2026-Q1 | Latest value |
|---|---|---|---|---|---|---|---|
| Simplify Asset Management Inc. | 3.1M | 3.1M | 2.7M | 1.6M | 1.6M | 1.6M | $38M |
| JPMORGAN CHASE & CO | 191K | 191K | 191K | 349K | 164K | 155K | $4M |
| PRINCIPAL SECURITIES, INC. | 1K | 1K | 1K | 1K | 13K | 30K | $721,235 |
| ENVESTNET ASSET MANAGEMENT INC | — | — | — | — | 12K | 28K | $684,736 |
| ROYAL BANK OF CANADA | 14K | 6K | 15K | 9K | 6K | 379 | $9,000 |
Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.
Holder count only — too few computable %-of-shares-outstanding quarters for a % pane. Line breaks are quarters with no 13F record, never interpolated.
| Quarter | Holders | Shares held | % shares out | Value held |
|---|---|---|---|---|
| 2026-Q1 | 5 | 1,766,774 | — | $43M |
| 2025-Q4 | 8 | 1,775,322 | — | $44M |
| 2025-Q3 | 7 | 2,027,002 | — | $51M |
| 2025-Q2 | 5 | 2,921,647 | — | $73M |
| 2025-Q1 | 7 | 3,740,485 | — | $85M |
| 2024-Q4 | 7 | 3,749,847 | — | $91M |
| 2024-Q3 | 6 | 3,971,573 | — | $100M |
Short interest has its own tab now — open SI →
Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.
| Biggest buyers | Δ shares | Δ value | |
|---|---|---|---|
| PRINCIPAL SECURITIES, INC. | +16,522 | $399,181 | ADD |
| ENVESTNET ASSET MANAGEMENT INC | +16,258 | $392,803 | ADD |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| JANE STREET GROUP, LLC | −14,415 | $348,275 | CLOSE |
| KESTRA PRIVATE WEALTH SERVICES, LLC | −11,914 | $287,849 | CLOSE |
| JPMORGAN CHASE & CO | −8,942 | $216,044 | TRIM |
| ROYAL BANK OF CANADA | −5,979 | $144,456 | TRIM |
| UBS Group AG | −78 | $1,885 | CLOSE |
The 2025-Q4 register is as-filed in ITS OWN share basis; every count below was rebased into the 2026-Q1 basis (no split in between, factor 1). Dollar figures value the SHARE delta at one price — the 2026-03-31 close — rather than differencing two filings' own reported values, which would mix the quarter's price move into the trade figure.
13Fs disclose LONG US-listed positions only — shorts, most derivatives, bonds and non-US listings are invisible here, and a filer's quarter-over-quarter change is not necessarily a trade (index rebalances, in-kind transfers and entity successions all read as flow).
