Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in RDIB held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | Teton Advisors, LLC | 74K | $688K | 0.0% | 0.327% | 0.48% |
| 2 | GAMCO INVESTORS, INC. ET AL | 34K | $315K | 0.0% | 0.150% | 0.00% |
| 3 | DIMENSIONAL FUND ADVISORS LP | 18K | $162K | -13.2% | 0.079% | 0.00% |
| 4 | GABELLI FUNDS LLC | 15K | $136K | 0.0% | 0.065% | 0.00% |
| 5 | INVESTMENT COUNSEL CO OF NEVADA | 6K | $55K | -45.3% | 0.027% | 0.12% |
| 6 | VANGUARD FIDUCIARY TRUST CO | 5K | $42K | — | 0.020% | 0.00% |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 4K | $38K | — | 0.018% | 0.00% |
| 8 | CITIGROUP INC | 4K | $38K | -5.4% | 0.018% | 0.00% |
| 9 | UBS Group AG | 1K | $12K | +924.0% | 0.006% | 0.00% |
| 10 | Tower Research Capital LLC (TRC) | 947 | $9K | +38.6% | 0.004% | 0.00% |
| 11 | Vanguard Global Advisers, LLC | 263 | $2K | — | 0.001% | 0.00% |
| 12 | SBI Securities Co., Ltd. | 3 | $28 | 0.0% | 0.000% | 0.00% |
| 13 | ROYAL BANK OF CANADA | 1 | $0 | 0.0% | 0.000% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in RDIB — a direct measure of their conviction.
Filings activity in RDIB during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new RDIB position in Q1 2026
Institutions that fully closed their RDIB position in Q1 2026
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 13 | +18% | 0.85% | 0.21 pp | $1M | 19% |
| Q4 2025 | 11 | +10% | 1.06% | +0.01 pp | $2M | +0.6% |
| Q3 2025 | 10 | +0.0% | 1.05% | +0.13 pp | $2M | +15% |
| Q2 2025 | 10 | 17% | 0.92% | +0.28 pp | $2M | +43% |
| Q1 2025 | 12 | +20% | 0.64% | 0.10 pp | $1M | 13% |
| Q4 2024 | 10 | 9.1% | 0.74% | +0.05 pp | $1M | +6.6% |
| Q3 2024 | 11 | 15% | 0.69% | 0.79 pp | $1M | 53% |
| Q2 2024 | 13 | — | 1.48% | — | $3M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying RDIB stock.
Based on Q1 2026 13F filings, institutional ownership of Reading International, Inc. stands at 0.9%, held across 13 reporting institutions.
Teton Advisors, LLC is the largest reported institutional holder of RDIB, with approximately 74,360 shares worth $0.00B as of Q1 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of RDIB.
Our composite Smart Money Score for RDIB is 45 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
3 institutions opened new positions in RDIB during Q1 2026, while 1 fully exited. 2 added to existing positions and 7 trimmed.
RDIB institutional ownership fell by 0.21 percentage points quarter-over-quarter, with a net change of +2 holders.
The top 10 institutions account for 99.8% of all reported 13F value in RDIB, and the top 25 account for 100.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Reading International, Inc. (RDIB) Institutional Ownership