New Positions
2 managers initiated
Top five by reported value
CONTEMPORARY AMPEREX TECHNOLOGY PNK:CTATF
Institutional holders, quarter-over-quarter share deltas, and new and closed positions disclosed in Form 13F. Period 2025-12-31 · prior 2025-09-30.
2 new2 added2 reduced2 exited
Total Institutional Holders
6
as of 2025-12-31
Top Holder
Boston Common Asset Management, LLC
$3.4M
Largest QoQ Increase
Boston Common Asset Management, LLC
+209,221 sh
Largest QoQ Decrease
Myriad Asset Management US LP
-30,800 sh
New Positions(2)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| Boston Common Asset Management, LLC | 209,221 | +209,221 | $3.4M | +$3.4M | — |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 458 | +458 | $7.4K | +$7.4K | — |
Added To(2)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| Ancora Advisors, LLC | 1,577 | +1,277 | $25.4K | +$19.9K | 425.7% |
| PNC Financial Services Group, Inc. | 7,741 | +702 | $124.8K | -$4.5K | 10.0% |
Reduced(2)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| RHUMBLINE ADVISERS | 9,343 | -1,239 | $150.6K | -$43.2K | -11.7% |
| RIVERBRIDGE PARTNERS LLC | 10,392 | 0 | $167.5K | -$22.8K | 0.0% |
Sold Out(2)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| Myriad Asset Management US LP | 0 | -30,800 | $0 | -$564.1K | — |
| BESSEMER GROUP INC | 0 | -104 | $0 | -$2 | — |
Top Holders by reported value
Ranked by the dollar value reported on the latest Form 13F. Share counts reflect long positions as of 2025-12-31.
| Manager | Shares | $ Value | Δ Shares | QoQ % |
|---|---|---|---|---|
| Boston Common Asset Management, LLC | 209,221 | $3.4M | +209,221 | — |
| RIVERBRIDGE PARTNERS LLC | 10,392 | $167.5K | 0 | 0.0% |
| RHUMBLINE ADVISERS | 9,343 | $150.6K | -1,239 | -11.7% |
| PNC Financial Services Group, Inc. | 7,741 | $124.8K | +702 | 10.0% |
| Ancora Advisors, LLC | 1,577 | $25.4K | +1,277 | 425.7% |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 458 | $7.4K | +458 | — |
New & Closed Positions this quarter
Closed Positions
2 managers exited
Top five by prior-quarter value
Methodology
Form 13F is the SEC's quarterly disclosure for institutional investment managers exercising discretion over $100 million or more in qualifying U.S. equity securities. Managers must file within 45 days of each calendar quarter end, which is why holdings shown here reflect a snapshot at the period date — not real-time positioning.
Quarter-over-quarter deltas compare each manager's most recently reported share count for CTATF against its prior-quarter count. New positions are entries where the prior count was zero; closed positions are entries where the current count is zero. Amendments (13F-HR/A) replace prior filings for the same period.
Source: SEC EDGAR Form 13F (XML information tables). Dollar values are as reported by the manager and may use mid-quarter pricing conventions. CUSIP-to-ticker resolution is best-effort.