Natural Alternatives International Inc (Nasdaq: NAII), an SEC filer in Medicinal Chemicals & Botanical Products, closed at $2.16, -5.7%, on 2026-08-28, with a market cap of $14M as of 2026-08-27, a return on equity of -18.0%, a net margin of -10.5% and 3-year sales growth of -8.8%. Institutional ownership, earnings history and filed financials are on the tabs below.
| # | Holder | Shares | Value | % of shares out | Δ QoQ |
|---|---|---|---|---|---|
| 1 | CALDWELL SUTTER CAPITAL, INC. | 498,792498,792 | $1M | 8.08% | ADD 8% |
| 2 | DIMENSIONAL FUND ADVISORS LP | 354,739354,739 | $932,964 | 5.74% | TRIM -8% |
| 3 | Mink Brook Asset Management LLC | 293,709293,709 | $772,455 | 4.76% | — |
| 4 | RENAISSANCE TECHNOLOGIES LLC | 291,356291,356 | $766,266 | 4.72% | TRIM -4% |
| 5 | MORGAN STANLEY | 268,250268,250 | $705,498 | 4.34% | ADD 13% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 210,880210,880 | $554,614 | 3.41% | NEW† |
| 7 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 75,31675,316 | $198,081 | 1.22% | — |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 52,40552,405 | $137,861 | 0.85% | ADD 23% |
| 9 | CITADEL ADVISORS LLC | 43,70843,708 | $114,952 | 0.71% | ADD 199% |
| 10 | VANGUARD FIDUCIARY TRUST CO | 27,09527,095 | $71,260 | 0.44% | NEW |
† NEW this big is usually a rename.
Ranked by each filer’s own reported value, not shares.
1 holder — The filer reported no value for this line, so it carries no dollar figure and is left out of the percentage and value columns.
| Biggest buyers | Δ shares | Δ value | |
|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | +210,880 | $554,614 | OPEN |
| CALDWELL SUTTER CAPITAL, INC. | +37,000 | $97,310 | ADD |
| MORGAN STANLEY | +31,000 | $81,530 | ADD |
| CITADEL ADVISORS LLC | +29,081 | $76,483 | ADD |
| VANGUARD FIDUCIARY TRUST CO | +27,095 | $71,260 | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| VANGUARD GROUP INC | −240,794 | $633,288 | CLOSE |
| Topline Capital Management, LLC | −109,503 | $287,993 | CLOSE |
| DIMENSIONAL FUND ADVISORS LP | −29,758 | $78,264 | TRIM |
| RENAISSANCE TECHNOLOGIES LLC | −11,400 | $29,982 | TRIM |
| DRW Securities, LLC | −10,377 | $27,292 | CLOSE |
Prior quarter split-rebased · 13Fs are long, US-listed only.
| Holder | 2024-Q4 | 2025-Q1 | 2025-Q2 | 2025-Q3 | 2025-Q4 | 2026-Q1 | Latest value |
|---|---|---|---|---|---|---|---|
| CALDWELL SUTTER CAPITAL, INC. | 412K | 421K | 419K | 419K | 462K | 499K | $1M |
| DIMENSIONAL FUND ADVISORS LP | 429K | 429K | 426K | 423K | 384K | 355K | $932,964 |
| Mink Brook Asset Management LLC | 300K | 295K | 294K | 294K | 294K | 294K | $772,455 |
| RENAISSANCE TECHNOLOGIES LLC | 309K | 304K | 298K | 292K | 303K | 291K | $766,266 |
| MORGAN STANLEY | 104K | 94K | 118K | 146K | 237K | 268K | $705,498 |
| VANGUARD CAPITAL MANAGEMENT LLC | — | — | — | — | — | 211K | $554,614 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 120K | 120K | 111K | 111K | 74K | 75K | $198,081 |
| GEODE CAPITAL MANAGEMENT, LLC | 45K | 44K | 42K | 42K | 43K | 52K | $137,861 |
| CITADEL ADVISORS LLC | 14K | — | — | — | 15K | 44K | $114,952 |
| VANGUARD FIDUCIARY TRUST CO | — | — | — | — | — | 27K | $71,260 |
Green = added, red = trimmed, grey = held; a dash is a quarter with no 13F on file — a gap, not an exit.
Breaks = no 13F that quarter.
Short interest has its own tab now — open SI →
SEC Form 13F · ~10,250 filers, 10y · long-only, US-listed, filed ≤45d after quarter-end.
