WEITZ INVESTMENT MANAGEMENT, INC. 13F: Quarter-over-Quarter Portfolio Changes
WEITZ INVESTMENT MANAGEMENT, INC. reported a disclosed portfolio value of approximately $1.4 billion in its latest SEC Form 13F-HR filing for Q1 2026, down 15.1% quarter on quarter. Over the quarter, the manager initiated 8 new positions, bought more shares in 6 holdings, trimmed 28 holdings, and exited 3 positions.
WEITZ INVESTMENT MANAGEMENT, INC.'s top buy was a new stake in Ingersoll Rand INC (IR) , equal to 0.7% of the disclosed portfolio. Its top sell was Roper Technologies INC (ROP) . The manager exited the position completely after it had accounted for 1.0% of the previous portfolio.
New PositionsQ1 2026
Securities disclosed for the first time in Q1 2026 that were not present in the prior 13F-HR filing.
| Company | Ticker | Initial Portfolio Weight | History |
|---|---|---|---|
| INGERSOLL RAND INC | IR | 0.7% | Holders → |
| ASML HLDG NV | ASML | 0.5% | Holders → |
| TAIWAN SEMIC-ADR | TSM | 0.5% | Holders → |
| NVIDIA CORPORATION COM | NVDA | 0.4% | Holders → |
| POOL CORP | POOL | 0.2% | Holders → |
| REPLIGEN CORP | RGEN | 0.2% | Holders → |
| FERGUSON ENTERPRISES INC | FERG | 0.1% | Holders → |
| AMPHENOL | APH | 0.1% | Holders → |
Top BuysQ1 2026
The manager's top buys among existing positions in Q1 2026. Ranked by portfolio-weight impact, with the percentage of additional shares shown separately.
| Company | Ticker | Portfolio Weight Change | More Shares | History |
|---|---|---|---|---|
| MERCADOLIBRE INC | MELI | +0.5% | +116.2% | Holders → |
| HEICO CORP NEW | HEI/A | +0.3% | +16.1% | — |
| MICROSOFT | MSFT | +0.2% | +16.1% | History → |
| ACCENTURE | ACN | +-0.2% | +6.1% | Holders → |
| VERALTO CORP | VLTO | +0.0% | +5.3% | Holders → |
| VULCAN MATLS CO | VMC | +0.5% | +1.9% | History → |
Top SellsQ1 2026
Showing the top 10 sells among 28 existing positions where the manager sold shares in Q1 2026. Ranked by portfolio-weight impact. Full exits are listed separately.
| Company | Ticker | Portfolio Weight Change | Shares Sold | History |
|---|---|---|---|---|
| FORTIVE CORP | FTV | -0.1% | 50.4% | Holders → |
| COMCAST CLASS A | CMCSA | -0.1% | 44.7% | Holders → |
| OLD DOMINION FREIGHT LINE IN | ODFL | -0.1% | 36.8% | Holders → |
| CDW CORP | CDW | -0.1% | 35.6% | Holders → |
| GLOBAL PMTS INC | GPN | -0.7% | 33.7% | Holders → |
| IDEX CORP | IEX | -0.6% | 32.5% | History → |
| COSTAR GROUP INC | CSGP | -1.4% | 28.2% | Holders → |
| ORACLE CORP | ORCL | -0.2% | 21.4% | Holders → |
| ANALOG DEVICES INC | ADI | 0.2% | 19.9% | Holders → |
| BIO-TECHNE CORP | TECH | -0.4% | 18.6% | Holders → |
Full ExitsQ1 2026
Positions present in the prior 13F-HR filing that no longer appear in Q1 2026.
| Company | Ticker | Last-Reported Portfolio Weight |
|---|---|---|
| ROPER TECHNOLOGIES INC | ROP | 1.0% |
| GARTNER INC | IT | 0.4% |
| DIAGEO PLC | DEO | 0.1% |
Net Portfolio Value ChangeQ1 2026
- $1.7BPrior quarter
- $1.4BCurrent quarter
- $-0.3BNet delta
- -15.1%% change
Methodology & FAQ
How WEITZ INVESTMENT MANAGEMENT, INC. Quarterly Changes Are Computed
All deltas are sourced from sequential SEC Form 13F-HR filings for WEITZ INVESTMENT MANAGEMENT, INC.: each row joins the most recent filing against the immediately preceding quarterly filing for the same fund. Share-count changes reflect reported trading activity, while portfolio weights can also move because of market price changes. Portfolio weights are normalized to exclude listed options for comparability. A complete description — including how confidential treatment filings are handled — is documented in the Methodology.
What stocks did WEITZ INVESTMENT MANAGEMENT, INC. buy in Q1 2026?
In Q1 2026, WEITZ INVESTMENT MANAGEMENT, INC. initiated 8 new positions (INGERSOLL RAND INC (IR), ASML HLDG NV (ASML), TAIWAN SEMIC-ADR (TSM), NVIDIA CORPORATION COM (NVDA), POOL CORP (POOL), REPLIGEN CORP (RGEN), FERGUSON ENTERPRISES INC (FERG), AMPHENOL (APH)); bought more shares of MERCADOLIBRE INC (MELI), HEICO CORP NEW (HEI/A), MICROSOFT (MSFT), ACCENTURE (ACN), VERALTO CORP (VLTO) — the largest 5 of 6 adds.
What stocks did WEITZ INVESTMENT MANAGEMENT, INC. sell in Q1 2026?
In Q1 2026, WEITZ INVESTMENT MANAGEMENT, INC. fully sold 3 positions (ROPER TECHNOLOGIES INC (ROP), GARTNER INC (IT), DIAGEO PLC (DEO)); reduced holdings in FORTIVE CORP (FTV), COMCAST CLASS A (CMCSA), OLD DOMINION FREIGHT LINE IN (ODFL), CDW CORP (CDW), GLOBAL PMTS INC (GPN) — the largest 5 of 28 reductions.
Which positions did WEITZ INVESTMENT MANAGEMENT, INC. initiate in Q1 2026?
WEITZ INVESTMENT MANAGEMENT, INC. established 8 new positions in Q1 2026: INGERSOLL RAND INC (IR, 0.7%), ASML HLDG NV (ASML, 0.5%), TAIWAN SEMIC-ADR (TSM, 0.5%), NVIDIA CORPORATION COM (NVDA, 0.4%), POOL CORP (POOL, 0.2%), REPLIGEN CORP (RGEN, 0.2%), FERGUSON ENTERPRISES INC (FERG, 0.1%), AMPHENOL (APH, 0.1%).
Which existing positions saw the largest allocation increases for WEITZ INVESTMENT MANAGEMENT, INC. in Q1 2026?
Of 6 existing positions with share-count increases in Q1 2026, the largest were: MERCADOLIBRE INC (MELI, +0.5% weight, +116.2% shares), HEICO CORP NEW (HEI/A, +0.3% weight, +16.1% shares), MICROSOFT (MSFT, +0.2% weight, +16.1% shares), ACCENTURE (ACN, +-0.2% weight, +6.1% shares), VERALTO CORP (VLTO, +0.0% weight, +5.3% shares), VULCAN MATLS CO (VMC, +0.5% weight, +1.9% shares).
Which positions did WEITZ INVESTMENT MANAGEMENT, INC. fully exit in Q1 2026?
WEITZ INVESTMENT MANAGEMENT, INC. fully exited 3 positions in Q1 2026: ROPER TECHNOLOGIES INC (ROP, last-reported weight 1.0%), GARTNER INC (IT, last-reported weight 0.4%), DIAGEO PLC (DEO, last-reported weight 0.1%).
Which existing positions saw the largest allocation reductions for WEITZ INVESTMENT MANAGEMENT, INC. in Q1 2026?
Of 28 existing positions with share-count reductions in Q1 2026, the largest were: FORTIVE CORP (FTV, -0.1% weight, -50.4% shares), COMCAST CLASS A (CMCSA, -0.1% weight, -44.7% shares), OLD DOMINION FREIGHT LINE IN (ODFL, -0.1% weight, -36.8% shares), CDW CORP (CDW, -0.1% weight, -35.6% shares), GLOBAL PMTS INC (GPN, -0.7% weight, -33.7% shares), IDEX CORP (IEX, -0.6% weight, -32.5% shares), COSTAR GROUP INC (CSGP, -1.4% weight, -28.2% shares), ORACLE CORP (ORCL, -0.2% weight, -21.4% shares), ANALOG DEVICES INC (ADI, 0.2% weight, -19.9% shares), BIO-TECHNE CORP (TECH, -0.4% weight, -18.6% shares).
Do quarter-over-quarter 13F allocation changes constitute explicit trading signals?
No. Quarter-over-quarter changes reflect a combination of active trading and market price movement. A weight increase can result from price appreciation alone, without the manager adding shares. Share-count delta is the cleaner indicator of explicit trading activity. All deltas on this page are sourced from sequential SEC Form 13F-HR filings.