PRLB — Proto Labs IncToday's name, from the SEC's present-day ticker list — a present-day mapping, not the name as of each filing.
- Congress trades
- 5
- all time
- Members · 12m
- 0
- 0 buys · 0 sells · by trade date
- Latest filing
- 11-09
- 2020-11-09
- Rows filed past the STOCK Act's 45-day window, stated on the row, never editorialised; both dates and the receipt stay on every row.
- 0
- every row filed inside 45 days
- 13F holders
- 223
- all listed · 2026-03-31
Congress: statutory ranges, filed up to 45 days after the trade · 13F: quarter-end snapshots, filed up to 45 days lateras of 2026-10-29
Congress · disclosure timeline
By trade date · 24 months · 0 rows ▲ buy, ▼ sell; height = lower bound (log scale). Trade date, not filing date — the filing lag is in the table below.No dated PRLB rows fall inside the trailing 24 months by trade date.
Members active in PRLB
12 months · most active first Rows = number of disclosures, not dollars. Net = lower bound of the net range. Committees as of each member's latest trade in the window (roster snapshot 2026-10-29).No member disclosed PRLB in the trailing 12 months.
| Filed | Member | Side · Owner | Traded · Lag | Amount | Range · Flags | Src |
|---|---|---|---|---|---|---|
| 2020-11-09 | Greg Gianforte R–MT-AL | SELL partial · JT (partial sale, jointly owned) | Traded 10-28 +12d | $100K–$250K | ||
| 2019-10-01 | Greg Gianforte R–MT-AL | BUY JT (jointly owned) | Traded 09-06 +25d | $100K–$250K | ||
| 2015-06-07 | Thomas MacArthur R–NJ-3 | SELL JT (jointly owned) | Traded 05-27 +11d | $1K–$15K | ||
| 2015-02-26 | Tillis, Thomas R — | SELL JT (jointly owned) | Traded 02-13 +13d | $1K–$15K | ||
| 2014-05-21 | Lois Frankel D–FL-22 | SELL | Traded 04-25 +26d | $1K–$15K |
13F holders · Quarter ended 2026-03-31Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt. · longs only
| # | Filer | Value | Securities | Flags | derived by Public Filings from this build's reviewed ticker-mapping holders list for this share class; that list carries each holder's share count, share change and filed date, which this table does not show, but no document links — the EDGAR link opens the filer's 13F list·§ |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $210M | 1 | derived ·§ EDGAR ↗ | |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | $87.7M | 1 | derived ·§ EDGAR ↗ | |
| 3 | DIMENSIONAL FUND ADVISORS LP | $72.5M | 1 | derived ·§ EDGAR ↗ | |
| 4 | STATE STREET CORP | $62.3M | 1 | derived ·§ EDGAR ↗ | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $59.3M | 1 | derived ·§ EDGAR ↗ | |
| 6 | AMERICAN CAPITAL MANAGEMENT INC | $35.8M | 1 | derived ·§ EDGAR ↗ | |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | $33.1M | 1 | derived ·§ EDGAR ↗ | |
| 8 | RENAISSANCE TECHNOLOGIES LLC | $29.7M | 1 | derived ·§ EDGAR ↗ | |
| 9 | Rubric Capital Management LP | $27.7M | 1 | derived ·§ EDGAR ↗ | |
| 10 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $26.4M | 1 | derived ·§ EDGAR ↗ | |
| 11 | FMR LLC | $24.1M | 1 | derived ·§ EDGAR ↗ | |
| 12 | PRUDENTIAL FINANCIAL INC | $22.8M | 1 | derived ·§ EDGAR ↗ | |
| 13 | DRIEHAUS CAPITAL MANAGEMENT LLC | $21.0M | 1 | derived ·§ EDGAR ↗ | |
| 14 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $20.5M | 1 | derived ·§ EDGAR ↗ | |
| 15 | Nuveen, LLC | $18.1M | 1 | derived ·§ EDGAR ↗ | |
| 16 | S SQUARED TECHNOLOGY, LLC | $16.9M | 1 | derived ·§ EDGAR ↗ | |
| 17 | MORGAN STANLEY | $16.7M | 1 | derived ·§ EDGAR ↗ | |
| 18 | NORTHERN TRUST CORP | $15.2M | 1 | derived ·§ EDGAR ↗ | |
| 19 | D. E. Shaw & Co., Inc. | $12.9M | 1 | derived ·§ EDGAR ↗ | |
| 20 | NORDEA INVESTMENT MANAGEMENT AB | $12.0M | 1 | derived ·§ EDGAR ↗ | |
| 21 | JUPITER ASSET MANAGEMENT LTD | $11.1M | 1 | derived ·§ EDGAR ↗ | |
| 22 | PANAGORA ASSET MANAGEMENT INC | $10.0M | 1 | derived ·§ EDGAR ↗ | |
| 23 | Hillsdale Investment Management Inc. | $9.9M | 1 | derived ·§ EDGAR ↗ | |
| 24 | UBS Group AG | $9.6M | 1 | derived ·§ EDGAR ↗ | |
| 25 | VANGUARD FIDUCIARY TRUST CO | $8.8M | 1 | derived ·§ EDGAR ↗ |
Show all 223 holders
| # | Filer | Value | Securities | Flags | Src·§ |
|---|
All 202 13F filers reporting this share class are listed. Method ↗
Crowding — not available in this build. No holder rows for the selected period, so no percentile can be ranked.
Congress ↔ notable managers · PRLB
Congress · last 90 days
- Buyers
- 0 — —
- Sellers
- 0 — —
filed 2026-07-31 → 2026-10-29 · statutory ranges
Notable managers · quarter ended 2026-03-31
- Adding
- 1 Bridgewater Associates $438K held
- Trimming
- 1 Gotham Asset Management $626K held
by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · PROTO LABS INC
| Date | Who | Change | Size |
|---|---|---|---|
| 2026-05-15 | Bridgewater Associates 13F | NEW | +7,690 sh |
| 2026-05-15 | Gotham Asset Management 13F | TRIM | −197 sh |
2 newest, by filing date · 13F rows are quarter-end snapshots, not trades
Congress vs filers
12 monthsCongress net (rows)no rows
Congress net ($ bound)$0
Filersnot computedThe filer side needs per-issuer quarter-over-quarter actions, which the published aggregate does not carry for this issuer. Convergence and divergence are stated only when both sides are computed.