Filed: 8/14/2025ACC: 0001085146-25-005142
📋 What this filing means
OSTERWEIS CAPITAL MANAGEMENT INC filed this quarterly 13F‑HR report disclosing 283 equity positions with a total reported market value of $2.09B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
283
Positions
$2.09B
Total AUM (reported)
482.81M
Total Shares
Allocation by class
COM$1.27B60.5%
NOTE 3/1$138.04M6.6%
CL A$99.26M4.7%
CAP STK CL C$85.71M4.1%
COM CL A$65.87M3.2%
NOTE 8/1$51.81M2.5%
NOTE 0.500% 8/1$51.74M2.5%
Portfolio Concentration
Top 3$276.97M13.3%
4–10$395.10M18.9%
11–25$574.60M27.5%
Rest$843.42M40.4%
Top 3 weight
13.3%
Top 10 weight
32.2%
Voting Authority Distribution
Total shares with voting rights: 482.81M
Sole
Full voting authority
482.81M
shares
% of voting shares100.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
0.00
shares
% of voting shares0.0%
Investment Discretion (by position count)
Sole283
Shared0
Other0
Dominant voting typeSole · 100.0% of voting shares
Institutional Holdings283
Rows:
MICROSOFT CORP
SOLEShares228.32K
TypeSH
Market value$113.57M
5.43%
Sole
228.32K
Shared
0.00
None
0.00
ALPHABET INC
SOLEShares483.15K
TypeSH
Market value$85.71M
4.10%
Sole
483.15K
Shared
0.00
None
0.00
AMAZON COM INC
SOLEShares354.13K
TypeSH
Market value$77.69M
3.72%
Sole
354.13K
Shared
0.00
None
0.00
AIRBNB INC
SOLEShares70.75M
TypePRN
Market value$68.38M
3.27%
Sole
70.75M
Shared
0.00
None
0.00
CABLE ONE INC
SOLEShares70.31M
TypePRN
Market value$66.69M
3.19%
Sole
70.31M
Shared
0.00
None
0.00
BROADCOM INC
SOLEShares214.37K
TypeSH
Market value$59.09M
2.83%
Sole
214.37K
Shared
0.00
None
0.00
WIX COM LTD
SOLEShares51.94M
TypePRN
Market value$51.81M
2.48%
Sole
51.94M
Shared
0.00
None
0.00
INTEGRA LIFESCIENCES HLDGS C
SOLEShares52.20M
TypePRN
Market value$51.74M
2.48%
Sole
52.20M
Shared
0.00
None
0.00
VISA INC
SOLEShares140.07K
TypeSH
Market value$49.73M
2.38%
Sole
140.07K
Shared
0.00
None
0.00
DANAHER CORPORATION
SOLEShares241.23K
TypeSH
Market value$47.65M
2.28%
Sole
241.23K
Shared
0.00
None
0.00
HAEMONETICS CORP MASS
SOLEShares48.57M
TypePRN
Market value$47.05M
2.25%
Sole
48.57M
Shared
0.00
None
0.00
AUTOZONE INC
SOLEShares11.72K
TypeSH
Market value$43.52M
2.08%
Sole
11.72K
Shared
0.00
None
0.00
AIR PRODS & CHEMS INC
SOLEShares148.98K
TypeSH
Market value$42.02M
2.01%
Sole
148.98K
Shared
0.00
None
0.00
JPMORGAN CHASE & CO.
SOLEShares141.76K
TypeSH
Market value$41.10M
1.97%
Sole
141.76K
Shared
0.00
None
0.00
AMERICAN WTR WKS CO INC NEW
SOLEShares294.94K
TypeSH
Market value$41.03M
1.96%
Sole
294.94K
Shared
0.00
None
0.00
WASTE CONNECTIONS INC
SOLEShares210.26K
TypeSH
Market value$39.26M
1.88%
Sole
210.26K
Shared
0.00
None
0.00
L3HARRIS TECHNOLOGIES INC
SOLEShares152.57K
TypeSH
Market value$38.27M
1.83%
Sole
152.57K
Shared
0.00
None
0.00
ANALOG DEVICES INC
SOLEShares157.53K
TypeSH
Market value$37.50M
1.79%
Sole
157.53K
Shared
0.00
None
0.00
LENDINGTREE INC
SOLEShares37.14M
TypePRN
Market value$36.91M
1.77%
Sole
37.14M
Shared
0.00
None
0.00
BROWN & BROWN INC
SOLEShares330.22K
TypeSH
Market value$36.61M
1.75%
Sole
330.22K
Shared
0.00
None
0.00
PROGRESSIVE CORP
SOLEShares131.64K
TypeSH
Market value$35.13M
1.68%
Sole
131.64K
Shared
0.00
None
0.00
FERGUSON ENTERPRISES INC
SOLEShares159.92K
TypeSH
Market value$34.82M
1.67%
Sole
159.92K
Shared
0.00
None
0.00
INTUIT
SOLEShares43.27K
TypeSH
Market value$34.08M
1.63%
Sole
43.27K
Shared
0.00
None
0.00
TERRENO RLTY CORP
SOLEShares601.02K
TypeSH
Market value$33.70M
1.61%
Sole
601.02K
Shared
0.00
None
0.00
APPLIED MATLS INC
SOLEShares183.54K
TypeSH
Market value$33.60M
1.61%
Sole
183.54K
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
MICROSOFT CORPSOLE | COM | 228.32K | SH | $113.57M 5.43% | 228.32K | 0.00 | 0.00 |
ALPHABET INCSOLE | CAP STK CL C | 483.15K | SH | $85.71M 4.10% | 483.15K | 0.00 | 0.00 |
AMAZON COM INCSOLE | COM | 354.13K | SH | $77.69M 3.72% | 354.13K | 0.00 | 0.00 |
AIRBNB INCSOLE | NOTE 3/1 | 70.75M | PRN | $68.38M 3.27% | 70.75M | 0.00 | 0.00 |
CABLE ONE INCSOLE | NOTE 3/1 | 70.31M | PRN | $66.69M 3.19% | 70.31M | 0.00 | 0.00 |
BROADCOM INCSOLE | COM | 214.37K | SH | $59.09M 2.83% | 214.37K | 0.00 | 0.00 |
WIX COM LTDSOLE | NOTE 8/1 | 51.94M | PRN | $51.81M 2.48% | 51.94M | 0.00 | 0.00 |
INTEGRA LIFESCIENCES HLDGS CSOLE | NOTE 0.500% 8/1 | 52.20M | PRN | $51.74M 2.48% | 52.20M | 0.00 | 0.00 |
VISA INCSOLE | COM CL A | 140.07K | SH | $49.73M 2.38% | 140.07K | 0.00 | 0.00 |
DANAHER CORPORATIONSOLE | COM | 241.23K | SH | $47.65M 2.28% | 241.23K | 0.00 | 0.00 |
HAEMONETICS CORP MASSSOLE | NOTE 3/0 | 48.57M | PRN | $47.05M 2.25% | 48.57M | 0.00 | 0.00 |
AUTOZONE INCSOLE | COM | 11.72K | SH | $43.52M 2.08% | 11.72K | 0.00 | 0.00 |
AIR PRODS & CHEMS INCSOLE | COM | 148.98K | SH | $42.02M 2.01% | 148.98K | 0.00 | 0.00 |
JPMORGAN CHASE & CO.SOLE | COM | 141.76K | SH | $41.10M 1.97% | 141.76K | 0.00 | 0.00 |
AMERICAN WTR WKS CO INC NEWSOLE | COM | 294.94K | SH | $41.03M 1.96% | 294.94K | 0.00 | 0.00 |
WASTE CONNECTIONS INCSOLE | COM | 210.26K | SH | $39.26M 1.88% | 210.26K | 0.00 | 0.00 |
L3HARRIS TECHNOLOGIES INCSOLE | COM | 152.57K | SH | $38.27M 1.83% | 152.57K | 0.00 | 0.00 |
ANALOG DEVICES INCSOLE | COM | 157.53K | SH | $37.50M 1.79% | 157.53K | 0.00 | 0.00 |
LENDINGTREE INCSOLE | NOTE 0.500% 7/1 | 37.14M | PRN | $36.91M 1.77% | 37.14M | 0.00 | 0.00 |
BROWN & BROWN INCSOLE | COM | 330.22K | SH | $36.61M 1.75% | 330.22K | 0.00 | 0.00 |
PROGRESSIVE CORPSOLE | COM | 131.64K | SH | $35.13M 1.68% | 131.64K | 0.00 | 0.00 |
FERGUSON ENTERPRISES INCSOLE | COMMON STOCK NEW | 159.92K | SH | $34.82M 1.67% | 159.92K | 0.00 | 0.00 |
INTUITSOLE | COM | 43.27K | SH | $34.08M 1.63% | 43.27K | 0.00 | 0.00 |
TERRENO RLTY CORPSOLE | COM | 601.02K | SH | $33.70M 1.61% | 601.02K | 0.00 | 0.00 |
APPLIED MATLS INCSOLE | COM | 183.54K | SH | $33.60M 1.61% | 183.54K | 0.00 | 0.00 |
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