UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act file number 811-8568 John Hancock Bank & Thrift Opportunity Fund (Exact name of registrant as specified in charter) 101 Huntington Avenue, Boston, Massachusetts 02199 (Address of principal executive offices) (Zip code) Susan S. Newton, Secretary 101 Huntington Avenue Boston, Massachusetts 02199 (Name and address of agent for service) Registrant's telephone number, including area code: 617-375-1702 Date of fiscal year end: October 31 Date of reporting period: January 31, 2005 ITEM 1. SCHEDULE OF INVESTMENTS JOHN HANCOCK Bank and Thrift Opportunity Fund 1.31.2005 Quarterly Portfolio Holdings [A 2" x 1" John Hancock (Signature)/John Hancock Funds logo in lower, center middle of page. A tag line below reads "JOHN HANCOCK FUNDS."] John Hancock Bank and Thrift Opportunity Fund Securities owned by the Fund on January 31, 2005 (unaudited) Interest Maturity Credit Par value Issuer, description rate (%) date rating ($000) Value --------------------------------------------------------------------------------------------------------------------------------- Bonds 0.08% $932,470 (Cost $770,000) Regional Banks 0.08% 932,470 CSBI Capital Trust I Sub Cap Income Ser A (B)(G) 11.750 06-06-2027 B- 770 932,470 Issuer Shares Value --------------------------------------------------------------------------------------------------------------------------------- Common stocks 83.58% $924,719,835 (Cost $391,473,417) Asset Management & Custody Banks 5.19% 57,393,390 Affiliated Managers Group, Inc. (MA) (I)(L) 245,750 15,583,008 Bank of New York Co., Inc. (The) (NY) 313,000 9,299,230 Federated Investors, Inc. (Class B) (PA) 30,000 881,400 Legg Mason, Inc. (MD) 198,750 15,349,462 Mellon Financial Corp. (PA) 330,000 9,685,500 Northern Trust Corp. (IL) (L) 70,000 3,054,800 State Street Corp. (MA) 79,000 3,539,990 Consumer Finance 0.24% 2,658,000 MBNA Corp. (DE) 100,000 2,658,000 Diversified Banks 12.76% 141,201,180 Bank of America Corp. (NC) 634,670 29,429,648 Comerica, Inc. (MI) 447,400 25,886,564 U.S. Bancorp. (MN) 941,041 28,278,282 Wachovia Corp. (NC) 536,321 29,417,207 Wells Fargo & Co. (CA) 459,861 28,189,479 Life & Health Insurance 0.67% 7,368,600 MetLife, Inc. (NY) 104,000 4,134,000 Prudential Financial, Inc. (NJ) 60,000 3,234,600 Other Diversified Financial Services 3.85% 42,548,902 Citigroup, Inc. (NY) 505,925 24,815,621 JPMorgan Chase & Co. (MA) 475,041 17,733,281 Regional Banks 54.96% 608,161,438 ABC Bancorp. (GA) 65,400 1,330,236 Alabama National Bancorp. (AL) 142,500 8,870,625 AmericanWest Bancorp. (WA) (I) 357,921 6,804,078 AmSouth Bancorp. (AL) (L) 95,879 2,391,222 Banknorth Group, Inc. (ME) 682,688 24,481,192 BB&T Corp. (NC) 344,846 13,611,072 Beverly National Corp. (MA) 47,500 1,287,250 BOK Financial Corp. (OK) (I) 117,208 4,935,629 Camden National Corp. (ME) 140,000 5,215,000 Capital City Bank Group, Inc. (FL) 59,635 2,327,554 Cardinal Financial Corp. (VA) (I) 86,200 906,824 Cascade Bancorp. (OR) 194,272 3,784,419 Chittenden Corp. (VT) 175,245 4,750,892 City Holding Co. (WV) 41,600 1,369,680 City National Corp. (CA) 224,427 15,662,760 CoBiz, Inc. (CO) 8,650 176,287 Colonial BancGroup, Inc. (The) (AL) 585,200 11,809,336 Columbia Bancorp. (MD) 90,000 3,069,000 Columbia Bancorp. (OR) 13,250 238,500 Columbia Banking System, Inc. (WA) 29,645 698,140 Commercial Bankshares, Inc. (FL) 63,702 2,432,142 Community Bancorp. (NV) (I) 10,790 302,336 Community Banks, Inc. (PA) 105,055 2,874,305 Compass Bancshares, Inc. (AL) 580,857 27,201,533 Cullen/Frost Bankers, Inc. (TX) 20,000 939,200 Dearborn Bancorp., Inc. (MI) (I) 39,343 1,150,783 Desert Community Bank (CA) 137,500 3,713,875 DNB Financial Corp. (PA) 69,121 2,004,509 East West Bancorp., Inc. (CA) (L) 540,000 21,027,600 EuroBancshares, Inc. (Puerto Rico) (I) 87,830 1,636,273 F.N.B. Corp. (PA) 90,049 1,781,169 Fifth Third Bancorp. (OH) (L) 514,540 23,910,674 Financial Institutions, Inc. (NY) 73,000 1,692,870 First Charter Corp. (NC) 52,200 1,197,990 First Horizon National Corp. (TN) (L) 156,650 6,668,591 First Midwest Bancorp., Inc. (IL) 19,000 655,500 First National Lincoln Corp. (ME) 146,499 2,527,108 First Regional Bancorp. (CA) 100,000 6,225,000 First Regional Bancorp. (CA) (I) 50,000 3,112,500 First State Bancorp. (NM) 65,000 2,457,650 FirstMerit Corp. (OH) 2,950 78,175 Fulton Financial Corp. (PA) (L) 106,803 2,331,509 Glacier Bancorp., Inc. (MT) 294,231 9,377,142 Harleysville National Corp. (PA) 137,776 3,491,244 Hibernia Corp. (Class A) (LA) 230,000 6,053,600 Independent Bank Corp. (MI) 308,105 9,480,391 International Bancshares Corp. (TX) 160,270 6,136,738 KeyCorp (OH) (L) 320,000 10,694,400 M&T Bank Corp. (NY) (L) 238,657 24,428,931 Marshall & Ilsley Corp. (WI) (L) 568,795 24,350,114 MB Financial, Inc. (IL) 105,000 4,167,450 Mercantile Bankshares Corp. (MD) (L) 209,500 10,606,985 Merrill Merchants Bankshares, Inc. (ME) 73,687 1,657,957 Mid-State Bancshares (CA) 50,000 1,410,500 National City Corp. (DE) (L) 550,688 19,576,958 North Fork Bancorp., Inc. (NY) 964,542 27,682,355 Northrim Bancorp., Inc. (AK) 70,053 1,667,962 Oriental Financial Group, Inc. (Puerto Rico) 20,234 570,599 Pacific Capital Bancorp. (CA) 364,354 11,178,381 Placer Sierra Bancshares (CA) 14,550 375,084 PNC Financial Services Group, Inc. (PA) (L) 418,500 22,544,595 Prosperity Bancshares, Inc. (TX) 120,000 3,333,600 Provident Bankshares Corp. (MD) 165,058 5,458,468 Regions Financial Corp. (AL) (L) 127,390 4,076,480 Republic Bancorp., Inc. (MI) 3,300 47,091 S&T Bancorp., Inc. (PA) 154,700 5,702,242 Sandy Spring Bancorp., Inc. (MD) 9,500 350,027 Security Bank Corp. (GA) 35,000 1,435,000 Sky Financial Group, Inc. (OH) 234,850 6,237,616 SNB Bancshares, Inc. (TX) (I) 94,340 1,149,061 Southwest Bancorp. of Texas, Inc. (TX) 520,660 10,293,448 Southwest Bancorp., Inc. (OK) 9,000 198,090 Summit Bancshares, Inc. (TX) 279,000 5,061,060 SunTrust Banks, Inc. (GA) (L) 346,826 24,978,409 Synovus Financial Corp. (GA) (L) 450,000 12,208,500 Taylor Capital Group, Inc. (IL) 213,200 6,956,716 TCF Financial Corp. (MN) (L) 428,016 12,031,530 Texas United Bancshares, Inc. (TX) 47,100 878,415 TriCo Bancshares (CA) 53,000 1,167,590 UCBH Holdings, Inc. (CA) (L) 200,000 8,814,000 Umpqua Holdings Corp. (OR) 177,901 4,319,436 Univest Corp. (PA) 136,812 5,848,713 Valley National Bancorp. (NJ) (L) 149,892 3,867,214 Vineyard National Bancorp., Co. (CA) (B) 107,176 2,969,954 Vineyard National Bancorp., Co. (CA) (I) 150,000 4,618,500 Virginia Commerce Bancorp., Inc. (VA) (I) 13,337 368,368 West Coast Bancorp. (OR) 67,583 1,640,915 Whitney Holding Corp. (LA) 106,500 4,854,270 Wilmington Trust Corp. (DE) 350,000 12,169,500 Yardville National Bancorp. (NJ) 97,400 3,087,580 Zions Bancorp. (UT) (L) 426,825 28,947,271 Specialized Finance 0.37% 4,061,222 CIT Group, Inc. (NJ) 100,600 4,061,222 Thrifts & Mortgage Finance 5.54% 61,327,103 Astoria Financial Corp. (NY) 71,910 2,706,692 Commercial Capital Bancorp., Inc. (CA) (I) 450,000 8,950,500 Countrywide Financial Corp. (CA) (L) 406,000 15,022,000 Freddie Mac (VA) 140,000 9,140,600 Hingham Institute for Savings (MA) 80,000 3,400,000 LSB Corp. (MA) 65,000 1,212,250 New York Community Bancorp, Inc. (NY) 40,000 713,200 NewAlliance Bancshares, Inc. (CT) (I) 12,581 187,079 PennFed Financial Services, Inc. (NJ) (I) 313,600 4,998,784 Sovereign Bancorp, Inc. (PA) 30,000 682,200 Washington Mutual, Inc. (WA) 276,812 11,169,364 Webster Financial Corp. (CT) 70,110 3,144,434 Issuer Shares Value --------------------------------------------------------------------------------------------------------------------------------- Rights 0.00% $37,512 (Cost $0) Regional Banks 0.00% 37,512 Vineyard National Bancorp., Co. (CA) (B) 26,794 37,512 Interest Par value Issuer, description, maturity date rate (%) ($000) Value --------------------------------------------------------------------------------------------------------------------------------- Short-term investments 16.34% $180,814,652 (Cost $180,814,652) Certificates of Deposit 0.01% 80,783 Deposits in mutual banks 80,783 Joint Repurchase Agreement 0.64% 7,076,000 Investment in a joint repurchase agreement transaction with Barclays Capital, Inc. - Dated 01-31-05 due 02-01-05 (secured by U.S. Treasury Inflation Indexed Notes 1.625% due 01-15-15 and 1.875% due 07-15-13) 2.450 7,076 7,076,000 Shares --------------------------------------------------------------------------------------------------------------------------------- Cash Equivalents 15.69% 173,657,869 AIM Cash Investment Trust (T) 173,657,869 173,657,869 Total investments 100.00% $1,106,504,469 John Hancock Bank and Thrift Opportunity Fund Footnotes to Schedule of Investments January 31, 2005 (unaudited) (B) This security is fair valued in good faith under procedures established by the Board of Trustees. (G) Security rated internally by John Hancock Advisers, LLC. (I) Non-income-producing security. (L) All or a portion of this security is on loan as of January 31, 2005. (T) Represents investment of securities lending collateral. Parenthetical disclosure of a foreign country in the security description represents country of a foreign issuer. The percentage shown for each investment category is the total value of that category as a percentage of the total investments of the Fund. The cost of investments owned on January 31, 2005, including short-term investments, was $573,058,069. Gross unrealized appreciation and depreciation of investments aggregated $534,148,161 and $701,761, respectively, resulting in net unrealized appreciation of $533,446,400. For more information Trustees Charles L. Ladner, Chairman* James F. Carlin Richard P. Chapman, Jr.* William H. Cunningham Ronald R. Dion Dr. John A. Moore* Patti McGill Peterson* Steven R. Pruchansky James A. Shepherdson Lt. Gen. Norman H. Smith, USMC (Ret.) *Members of the Audit Committee Officers James A. Shepherdson President and Chief Executive Officer Susan S. Newton Senior Vice President and Secretary William H. King Vice President and Treasurer Investment Adviser John Hancock Advisers, LLC 101 Huntington Avenue Boston, Massachusetts 02199-7603 Custodian The Bank of New York One Wall Street New York, New York 10286 Transfer Agent and Dividend Disburser Mellon Investor Services 85 Challenger Road Overpeck Centre Ridgefield Park, New Jersey 07660 Legal Counsel Wilmer Cutler Pickering Hale and Dorr LLP 60 State Street Boston, Massachusetts 02109-1803 Stock Symbol Listed New York Stock Exchange: BTO How to contact us Internet www.jhfunds.com Mail Regular mail: Mellon Investor Services 85 Challenger Road Overpeck Centre Ridgefield Park, NJ 07660 Phone Customer service representatives 1-800-852-0218 Portfolio commentary 1-800-344-7054 24-hour automated information 1-800-843-0090 TDD line 1-800-231-5469 This report is for the information of the shareholders of John Hancock Bank and Thrift Opportunity Fund. P90Q1 1/05 3/05 ITEM 2. CONTROLS AND PROCEDURES. (a) Based upon their evaluation of the registrant's disclosure controls and procedures as conducted within 90 days of the filing date of this Form N-Q, the registrant's principal executive officer and principal accounting officer have concluded that those disclosure controls and procedures provide reasonable assurance that the material information required to be disclosed by the registrant on this report is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. (b) There were no changes in the registrant's internal control over financial reporting that occurred during the registrant's last fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting. ITEM 3. EXHIBITS. Separate certifications for the registrant's principal executive officer and principal accounting officer, as required by Rule 30a-2(a) under the Investment Company Act of 1940, are attached. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. John Hancock Bank and Thrift Opportunity Fund By: ------------------------------ James A. Shepherdson President and Chief Executive Officer Date: March 29, 2005 Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By: ------------------------------ James A. Shepherdson President and Chief Executive Officer Date: March 29, 2005 By: ------------------------------ William H. King Vice President and Treasurer Date: March 29, 2005