{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2007:DPOCBCD42IEH2JPGYFA4NFRHUS","short_pith_number":"pith:DPOCBCD4","schema_version":"1.0","canonical_sha256":"1bdc20887cd2087d25e6c141c69627a48a8227eba9ed3316906af4f8dabd302e","source":{"kind":"arxiv","id":"0710.2402","version":1},"attestation_state":"computed","paper":{"title":"Intraday pattern in bid-ask spreads and its power-law relaxation for Chinese A-share stocks","license":"","headline":"","cross_cats":["physics.soc-ph"],"primary_cat":"q-fin.ST","authors_text":"Wei-Xing Zhou (ECUST), Xiao-Hui Ni","submitted_at":"2007-10-12T08:19:48Z","abstract_excerpt":"We use high-frequency data of 1364 Chinese A-share stocks traded on the Shanghai Stock Exchange and Shenzhen Stock Exchange to investigate the intraday patterns in the bid-ask spreads. The daily periodicity in the spread time series is confirmed by Lomb analysis and the intraday bid-ask spreads are found to exhibit $L$-shaped pattern with idiosyncratic fine structure. The intraday spread of individual stocks relaxes as a power law within the first hour of the continuous double auction from 9:30AM to 10:30AM with exponents $\\beta_{\\rm{SHSE}}=0.19\\pm0.069$ for the Shanghai market and $\\beta_{\\rm"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"0710.2402","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"q-fin.ST","submitted_at":"2007-10-12T08:19:48Z","cross_cats_sorted":["physics.soc-ph"],"title_canon_sha256":"46e9adb89e272fbcd55dd4c9fc05bdeba66d1279c645030016cbbd5a97517bf6","abstract_canon_sha256":"fbd77d34e335983b6e11332d79f15299f6b900fdb2cd5acc92f43775ddb4ac86"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:12:32.571040Z","signature_b64":"WNzuBnqghz891DAjl7hairigaZ/I0xMtDOptIsGN9xXV4BzCD7oImMbfwAyxcfVlMMgoFf/vIWic2BT43atOCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1bdc20887cd2087d25e6c141c69627a48a8227eba9ed3316906af4f8dabd302e","last_reissued_at":"2026-05-18T04:12:32.570560Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:12:32.570560Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Intraday pattern in bid-ask spreads and its power-law relaxation for Chinese A-share stocks","license":"","headline":"","cross_cats":["physics.soc-ph"],"primary_cat":"q-fin.ST","authors_text":"Wei-Xing Zhou (ECUST), Xiao-Hui Ni","submitted_at":"2007-10-12T08:19:48Z","abstract_excerpt":"We use high-frequency data of 1364 Chinese A-share stocks traded on the Shanghai Stock Exchange and Shenzhen Stock Exchange to investigate the intraday patterns in the bid-ask spreads. The daily periodicity in the spread time series is confirmed by Lomb analysis and the intraday bid-ask spreads are found to exhibit $L$-shaped pattern with idiosyncratic fine structure. The intraday spread of individual stocks relaxes as a power law within the first hour of the continuous double auction from 9:30AM to 10:30AM with exponents $\\beta_{\\rm{SHSE}}=0.19\\pm0.069$ for the Shanghai market and $\\beta_{\\rm"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0710.2402","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"0710.2402","created_at":"2026-05-18T04:12:32.570629+00:00"},{"alias_kind":"arxiv_version","alias_value":"0710.2402v1","created_at":"2026-05-18T04:12:32.570629+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0710.2402","created_at":"2026-05-18T04:12:32.570629+00:00"},{"alias_kind":"pith_short_12","alias_value":"DPOCBCD42IEH","created_at":"2026-05-18T12:25:55.427421+00:00"},{"alias_kind":"pith_short_16","alias_value":"DPOCBCD42IEH2JPG","created_at":"2026-05-18T12:25:55.427421+00:00"},{"alias_kind":"pith_short_8","alias_value":"DPOCBCD4","created_at":"2026-05-18T12:25:55.427421+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/DPOCBCD42IEH2JPGYFA4NFRHUS","json":"https://pith.science/pith/DPOCBCD42IEH2JPGYFA4NFRHUS.json","graph_json":"https://pith.science/api/pith-number/DPOCBCD42IEH2JPGYFA4NFRHUS/graph.json","events_json":"https://pith.science/api/pith-number/DPOCBCD42IEH2JPGYFA4NFRHUS/events.json","paper":"https://pith.science/paper/DPOCBCD4"},"agent_actions":{"view_html":"https://pith.science/pith/DPOCBCD42IEH2JPGYFA4NFRHUS","download_json":"https://pith.science/pith/DPOCBCD42IEH2JPGYFA4NFRHUS.json","view_paper":"https://pith.science/paper/DPOCBCD4","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0710.2402&json=true","fetch_graph":"https://pith.science/api/pith-number/DPOCBCD42IEH2JPGYFA4NFRHUS/graph.json","fetch_events":"https://pith.science/api/pith-number/DPOCBCD42IEH2JPGYFA4NFRHUS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DPOCBCD42IEH2JPGYFA4NFRHUS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DPOCBCD42IEH2JPGYFA4NFRHUS/action/storage_attestation","attest_author":"https://pith.science/pith/DPOCBCD42IEH2JPGYFA4NFRHUS/action/author_attestation","sign_citation":"https://pith.science/pith/DPOCBCD42IEH2JPGYFA4NFRHUS/action/citation_signature","submit_replication":"https://pith.science/pith/DPOCBCD42IEH2JPGYFA4NFRHUS/action/replication_record"}},"created_at":"2026-05-18T04:12:32.570629+00:00","updated_at":"2026-05-18T04:12:32.570629+00:00"}