Posts

市场是一个人性的放大器，它能把人性丑恶面展现的淋漓尽致。很多交易的失败并非来自认知不足，而是来自对自身心理的误判。只有深刻理解这些行为偏差，交易者才能逐渐走向理性。 Self-attribution bias：把成功视作自己的实力，而失败归结于外界事物的影响。如：科技股上涨时赚了钱，认为是自己研究深刻；但当市场回调亏损时，却认为是“美联储讲话”或“市场被操控” Knowledge illusion：以为自己获得的信息越多，就能对某个事物的认知就会越立体，然而大量碎片化信息反而可能制造“懂”的错觉，掩盖真正的无知，信息量不等于洞察力。如：每天阅读大量的报告，如CPI，非农就业，FOMC Minutes，投行报告后，认为自己对市场了如指掌，频繁交易。 Hindsight bias：只要某件事已经发生，就能创造出多种逻辑自洽的论证，即使这些根本毫无道理。如：2020暴跌后，大部分人现在想起来会觉得抄底那是太明显了 Second hand information bias：感性，具体，生动，情绪化的故事，比事实更有说服力。如：社交媒体上看到有人展示短期盈利截图，让人们形成短期高频交易成功率很高的错觉 Confirmation bias：人只会主动去看支持自己观点的信息，而自动忽略反对自己的观点的证据，这个bias会被当今的社交媒体，推荐系统等无限放大。如：买黄金的时候，只看黄金利多文章，买科技只看科技利多文章，买比特币只看比特币利多文章。 Illusionary Correlation：通过主观感受，将无关的事务进行关联。如：看到某个分析师连续几次分析对了方向，于是认为他有预测未来的能力，进行大额押注。 Loss Aversion：亏钱带来的痛苦，比赚钱的快乐强两倍以上。如：2021年持有PYPL觉得肯定会涨回来，一直留着不卖，而NVDA涨了一点就轻易卖了。 Illusion of Control：以为自己研究的指标越多，划线越多，就觉得自己掌控天下，神挡杀神。如：在图表上画满技术指标，认为可以预测每一次波动，实际上市场短期分布完全高斯分布。 FOMO：看别人赚钱，比自己亏钱更难受。如：CRCL IPO后暴涨，看到别人赚了钱，于是买入，结果220套在高处。 Anchoring Bias：人会被自己内心铆钉的价格所框柱，而不知市场从来不记得你的内心的价格。如：2020年BABA达到$300，很多人在200区间买入后暴跌，但是忽略了监管和宏观环境和基本面的重大变化，单纯认为以前达到过300所以现在200很便宜。 Gambler’s Fallacy：人常常会想：都跌这么多了，应该会涨了吧？殊不知独立事件不会因为你心理的难受就发生变化。如：crypto永续合约，暴跌不止损，心理总想着要涨回去的，结果最后爆仓归零。 Narrative Fallacy：人性天生爱故事，而不爱概率，逻辑自洽>统计学优势。如：相信“AI将改变世界”叙事，忽略估值和竞争 Disposition Effect：赚钱的想着落袋为安，亏钱的想着等待回本。如：买的大盘SPY，看到涨了立马卖掉，买的毛票看到跌了还想着等待回本。 Overconfidence Bias：赚几次钱后，错把运气当实力。如：用Iron Condor获得了一段时间稳定收益后，认为strategy有edge，于是扩大规模，结果2020年直接丢掉全部收益。

CS 97SI: Introduction to Programming Contests Learn useful algorithms, mathematical insights. Homepage Solutions Lecture Summary Introduction Slides Mathematics Slides Data Structures Slides Dynamic Programming (DP) Slides Combinatorial Games Slides Basic Graph Algorithms Slides Shortest Path Algorithms Slides Network Flow Problems Slides Computational Geometry Slides String Algorithms (Additional material: Suffix Arrays - A Programming Contest Approach) Slides

It is a misfortune of the times that all of us must needs be amateur economists-including, and perhaps especially, the professionals. — Benjamin Graham News investing.com: https://investing.com/ yahoo!finance: https://finance.yahoo.com/ Bloomberg: https://www.bloomberg.com/ Analysis testfol.io: https://testfol.io/ Stock Analysis: https://stockanalysis.com/ thinkorswim: https://www.schwab.com/trading/thinkorswim/desktop OptionAlpha: https://optionalpha.com/ TradingView: https://www.tradingview.com/ Brokers Interactive Brokers: https://www.interactivebrokers.com/ Refer: https://ibkr.com/referral/pian840 Fidelity Investments: https://www.fidelity.com/ Investing Resources Value Investing Security Analysis by Benjamin Graham The Intelligent Investor by Benjamin Graham The Interpretation of Financial Statements by Benjamin Graham Technical Analysis Beyond Candlesticks by Nison Steve Technical Analysis of Stock Trends by Robert D. Edwards & John Magee Options Options, Futures, and Other Derivatives by John Hull Others Principles by Ray Dalio

灵茶山艾府基础算法精讲 高频面试题 https://www.bilibili.com/video/BV1bP411c7oJ 题目清单 P1 - 双指针 LeetCode 167. Two Sum II - Input Array Is Sorted LeetCode 15. 3Sum P2 - 双指针 LeetCode 11. Container With Most Water LeetCode 42. Trapping Rain Water P3 - 滑动窗口 LeetCode 209. Minimum Size Subarray Sum LeetCode 713. Subarray Product Less Than K LeetCode 3. Longest Substring Without Repeating Characters P4 - 二分查找 LeetCode 34. Find First and Last Position of Element in Sorted Array P5 - 二分查找 LeetCode 162. Find Peak Element LeetCode 153. Find Minimum in Rotated Sorted Array LeetCode 33. Search in Rotated Sorted Array P6 - 链表反转 LeetCode 206. Reverse Linked List LeetCode 92. Reverse Linked List II LeetCode 25. Reverse Nodes in k-Group P7 - 链表快慢指针 LeetCode 876. Middle of the Linked List LeetCode 141. Linked List Cycle LeetCode 142. Linked List Cycle II LeetCode 143. Reorder List P8 - 链表删除 LeetCode 237. Delete Node in a Linked List LeetCode 19. Remove Nth Node From End of List LeetCode 83. Remove Duplicates from Sorted List LeetCode 82. Remove Duplicates from Sorted List II P9 - 二叉树基础 LeetCode 104. Maximum Depth of Binary Tree P10 - 二叉树 LeetCode 100. Same Tree LeetCode 101. Symmetric Tree LeetCode 110. Balanced Binary Tree LeetCode 199. Binary Tree Right Side View P11 - 二叉树 LeetCode 98. Validate Binary Search Tree P12 - 二叉树 LeetCode 236. Lowest Common Ancestor of a Binary Tree LeetCode 235. Lowest Common Ancestor of a Binary Search Tree P13 - 二叉树BFS LeetCode 102. Binary Tree Level Order Traversal LeetCode 103. Binary Tree Zigzag Level Order Traversal LeetCode 513. Find Bottom Left Tree Value P14 - 子集型回溯 LeetCode 17. Letter Combinations of a Phone Number LeetCode 78. Subsets LeetCode 131. Palindrome Partitioning P15 - 组合型回溯 LeetCode 77. Combinations LeetCode 216. Combination Sum III LeetCode 22. Generate Parentheses P16 - 排列型回溯 LeetCode 46. Permutations LeetCode 51. N-Queens P17 - DP基础 LeetCode 198. House Robber P18 - 背包问题 LeetCode 494. Target Sum LeetCode 322. Coin Change P19 - 线性DP LeetCode 1143. Longest Common Subsequence LeetCode 72. Edit Distance P20 - 线性DP LeetCode 300. Longest Increasing Subsequence P21 - 状态机DP LeetCode 122. Best Time to Buy and Sell Stock II LeetCode 309. Best Time to Buy and Sell Stock with Cooldown LeetCode 714. Best Time to Buy and Sell Stock with Transaction Fee LeetCode 188. Best Time to Buy and Sell Stock IV P22 - 区间DP LeetCode 516. Longest Palindromic Subsequence LeetCode 1039. Minimum Score Triangulation of Polygon P23 - 树型DP LeetCode 104. Maximum Depth of Binary Tree LeetCode 543. Diameter of Binary Tree LeetCode 124. Binary Tree Maximum Path Sum LeetCode 1245. Tree Diameter LeetCode 2246. Longest Path With Different Adjacent Characters P24 - 树型DP LeetCode 337. House Robber III P25 - 树型DP LeetCode 968. Binary Tree Cameras P26 - 单调栈 LeetCode 739. Daily Temperatures LeetCode 42. Trapping Rain Water P27 - 单调队列 LeetCode 239. Sliding Window Maximum 首刷 Day 1: P1 - P5 Day 2: P6 - P8 Day 3: P9 - P13 Day 4: P14 - P16 Day 5: P17 - P20 Day 6: P21 - P24 Day 7: P25 - P27 复习 Day 1: P1 - P13 Day 2: P14 - P20 Day 3: P21 - P27