WEITZ INVESTMENT MANAGEMENT, INC. — Quarter-over-Quarter 13F Allocation Shifts Q1 2026
In Q1 2026, WEITZ INVESTMENT MANAGEMENT, INC. initiated 8 new positions, increased allocation to 6 existing positions, trimmed 10 positions, and exited 3 positions entirely. The fund's 13F equity book declined from $1.69B to $1.43B (-15.1% QoQ) . All deltas are sourced from sequential SEC Form 13F-HR filings; share-count changes reflect explicit trading activity, while weight changes can also include price movement. This page lists every position change reported — the portfolio overview shows a summary of the top shifts.
Net Portfolio Value Change
- $1.69BPrior quarter
- $1.43BCurrent quarter
- $-0.25BNet delta
- -15.1%% change
New Position Initiations Q1 2026
Securities disclosed for the first time in Q1 2026 that were not present in the prior 13F-HR filing.
| Company | Ticker | Initial Allocation Weight | History |
|---|---|---|---|
| INGERSOLL RAND INC | IR | 0.74% | Holders → |
| ASML HOLDING NV | ASML | 0.51% | Holders → |
| TAIWAN SEMICONDUCTOR MANUFAC | TSM | 0.47% | Holders → |
| NVIDIA CORPORATION | NVDA | 0.43% | Holders → |
| POOL CORP | POOL | 0.21% | Holders → |
| REPLIGEN CORP | RGEN | 0.21% | Holders → |
| FERGUSON ENTERPRISES INC | FERG | 0.08% | Holders → |
| AMPHENOL CORP | APH | 0.08% | Holders → |
Largest Allocation Increases Q1 2026
Largest portfolio-weight increases in existing positions. Share-count delta is shown separately so price-only re-weighting can be distinguished from active adds.
| Company | Ticker | Δ Weight | Δ Shares | History |
|---|---|---|---|---|
| MERCADOLIBRE INC | MELI | +0.52% | +116.22% | Holders → |
| HEICO CORP NEW | HEI/A | +0.35% | +16.10% | Holders → |
| MICROSOFT CORP | MSFT | +0.19% | +16.08% | History → |
| ACCENTURE PLC IRELAND | ACN | +-0.20% | +6.09% | Holders → |
| VERALTO CORP | VLTO | +0.02% | +5.26% | Holders → |
| VULCAN MATERIALS CO | VMC | +0.52% | +1.90% | History → |
Largest Allocation Reductions Q1 2026
Largest portfolio-weight decreases in existing positions (positions kept open at a lower allocation).
| Company | Ticker | Δ Weight | Δ Shares | History |
|---|---|---|---|---|
| FORTIVE CORP | FTV | -0.06% | -50.44% | Holders → |
| COMCAST CORP NEW | CMCSA | -0.06% | -44.71% | Holders → |
| OLD DOMINION FREIGHT LINE IN | ODFL | -0.14% | -36.78% | Holders → |
| CDW CORP | CDW | -0.15% | -35.56% | Holders → |
| GLOBAL PMTS INC | GPN | -0.74% | -33.66% | Holders → |
| IDEX CORP | IEX | -0.63% | -32.49% | History → |
| COSTAR GROUP INC | CSGP | -1.41% | -28.18% | Holders → |
| ORACLE CORP | ORCL | -0.24% | -21.43% | Holders → |
| ANALOG DEVICES INC | ADI | 0.23% | -19.92% | Holders → |
| BIO-TECHNE CORP | TECH | -0.42% | -18.65% | Holders → |
Exited Positions Q1 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 | 0.96% |
| GARTNER INC | IT | 0.37% |
| DIAGEO PLC | DEO | 0.12% |
Methodology & FAQ
How WEITZ INVESTMENT MANAGEMENT, INC. Quarterly Changes Are Computed
Each row above is computed by joining the most recent 13F-HR filing for WEITZ INVESTMENT MANAGEMENT, INC. against the immediately preceding quarterly filing for the same fund. Portfolio weights are normalized to exclude listed options for comparability. A complete description of the methodology — including how confidential treatment filings are handled and why share count rather than weight is the cleaner trading signal — is documented in the Methodology.
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, 0.74%), ASML HOLDING NV (ASML, 0.51%), TAIWAN SEMICONDUCTOR MANUFAC (TSM, 0.47%), NVIDIA CORPORATION (NVDA, 0.43%), POOL CORP (POOL, 0.21%), REPLIGEN CORP (RGEN, 0.21%), FERGUSON ENTERPRISES INC (FERG, 0.08%), AMPHENOL CORP (APH, 0.08%).
Which existing positions saw the largest allocation increases for WEITZ INVESTMENT MANAGEMENT, INC. in Q1 2026?
The largest portfolio-weight increases in existing positions were: MERCADOLIBRE INC (MELI, +0.52% weight, +116.22% shares), HEICO CORP NEW (HEI/A, +0.35% weight, +16.10% shares), MICROSOFT CORP (MSFT, +0.19% weight, +16.08% shares), ACCENTURE PLC IRELAND (ACN, +-0.20% weight, +6.09% shares), VERALTO CORP (VLTO, +0.02% weight, +5.26% shares), VULCAN MATERIALS CO (VMC, +0.52% weight, +1.90% 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 0.96%), GARTNER INC (IT, last-reported weight 0.37%), DIAGEO PLC (DEO, last-reported weight 0.12%).
Which existing positions saw the largest allocation reductions for WEITZ INVESTMENT MANAGEMENT, INC. in Q1 2026?
The largest portfolio-weight reductions in positions kept open were: FORTIVE CORP (FTV, -0.06% weight, -50.44% shares), COMCAST CORP NEW (CMCSA, -0.06% weight, -44.71% shares), OLD DOMINION FREIGHT LINE IN (ODFL, -0.14% weight, -36.78% shares), CDW CORP (CDW, -0.15% weight, -35.56% shares), GLOBAL PMTS INC (GPN, -0.74% weight, -33.66% shares), IDEX CORP (IEX, -0.63% weight, -32.49% shares), COSTAR GROUP INC (CSGP, -1.41% weight, -28.18% shares), ORACLE CORP (ORCL, -0.24% weight, -21.43% shares), ANALOG DEVICES INC (ADI, 0.23% weight, -19.92% shares), BIO-TECHNE CORP (TECH, -0.42% weight, -18.65% 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.