CISI GSO · Cram Sheet

Last-night review · Print A4 · The high-frequency facts from all 5 chapters
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Exam-day cram sheet

All 50 exam questions distributed as: Ch 1 · 13Ch 2 · 11Ch 3 · 16Ch 4 · 4Ch 5 · 6. Ch 3 (safekeeping, nominees, custody fees, corporate actions, securities lending) is the heaviest and holds most of the arithmetic. UK tax figures are the workbook's 2025-26 set. Tap a card title to open the full chapter walkthrough.

Ch 1a · Participants + UK investor tests

Certified sophisticatedCertificate < 3 years old (FCA-approved)
Self-certified sophisticated2 yrs: £1m director / PE / unlisted deal
Certified HNWI12 mths: £100k income or £250k assets
Broker vs broker-dealerAgency / agency + proprietary
IDBBetween market makers · anonymity
Prime brokerageMainly hedge funds
MiFID clientsRetail most protected · ECP lightest
Trap: £250,000 HNWI net assets EXCLUDES the primary residence.

Ch 1b · Custody + subcustody

Global custody originERISA, mid-1970s
SubcustodianEyes and ears locally
Local strengthsTax, culture, lobbying, track record
Regional strengthsTech, standard reporting, discounts, rating
Custody agreementInvestor + global custodian
SLAInvestor + custodian service standards
RFI then RFPRFP = early screening, not the decision
Pension trusteesDirect custodian appointment (ERISA s404, 1995 Act)
Trap: subcustody agreements are amended to fit LOCAL law and practice.

Ch 1c · CSDs by market

UKCREST (Euroclear UK & Int'l)
USDTC (corporates) · Fed (governments)
Germany / SpainCBF / Iberclear
AustraliaCHESS · Austraclear (debt)
Japan / HKJASDEC / HKSCC (CMU for debt)
Singapore / KoreaCDP / KSD
India / BrazilNSDL + CDSL / B3
CREST quirkUSD excluded from RTGS
Trap: CREST members are direct "users" or sponsored via a user. Legal register = issuer register + operator register.

Ch 1d · ICSDs

ICSD originEurobond market (1960s)
Euroclear Bank channelsSWIFT · EasyWay · EUCLID
Clearstream channelsCreationConnect · via SWIFT · CreationOnline
Euroclear settlement typesInternal · Bridge · External
BridgeEuroclear Bank ↔ Clearstream
Euroclear real-time01:30-19:30 CET
Trap: EasyWay and EUCLID are Euroclear's; the Creation* names are Clearstream's.

Ch 1e · Giovannini, T2S, CSDR

Giovannini (Nov 2001)15 barriers: technical, legal, tax
T2SEurosystem platform · central bank money
CSDs on T2S (Mar 2025)24
CSDR settlementArt 5: max T+2
CSDR dematerialisationNew issues 1 Jan 2023 · all 1 Jan 2025
CSDR Art 47Issuer may use any EU CSD
CSDR bankingLimited-purpose only (1+2 or 2+2)
UKOnshored; no settlement discipline regime
Trap: UK dropped only the settlement discipline regime, not CSDR as a whole.

Ch 1f · STP, FIX, SWIFT

STPExecution to settlement, no manual intervention
FIXPre-trade + execution msgs · since 1992
SWIFT operationalMay 1977 · Brussels
SWIFT payments / securities~60% / just over 30% of FIN volume
StandardsISO 15022 (2002) → ISO 20022
Category 5Securities markets

Ch 2a · Clearing + CCP

Trade cycleTrade · pre-settle/clear · settle · post-settle
NovationCCP = buyer to every seller, seller to every buyer
ICM / GCM / NCMOwn only / own + others / uses a GCM
Bilateral clearingDirect credit risk to each counterparty
CCP default coverDefaulter's fund, then mutual guarantee
Third-party matchingDTCC CTM · MarketAxess (ICMA, 1989) · OSTTRA (CME + IHS Markit, 2021)
Transaction reportingMiFID II · via ARM · T+1
Trap: a CCP spreads and monitors default risk; it does not remove it.

Ch 2b · Settlement periods

Most equities/bondsT+2
US (DTC, Fed)T+1
India (all)T+1
UK gilts / JGBsT+1
Brazil debt · HK debt (CMU) · Korea debtT+0
UK equities/corp debtT+2 (CREST)
US/Canada/Mexico → T+1May 2024
Trap: Brazil equities are T+2 but Brazil debt is T+0. UK gilts (T+1) differ from UK equities (T+2).

Ch 2c · Depositary receipts

CreationShares deposited with depository bank → DRs issued
ADRUS$ · T+1 · vote yes, rights issue no
GDRTwo or more markets · often Euroclear/Clearstream
DIForeign share in CREST · SDRT-exempt
Pre-releaseShares due ~3 months · fully collateralised
DR issue tax (UK/Irish)1.5% (vs 0.5% UK share purchase)

Ch 2d · Payment systems

CHIPSUS$ · netting · pre-funded · settles via Fedwire
FedwireUS$ · gross RTGS · Federal Reserve
CHAPSSterling RTGS · 06:00-18:00
TARGET2Euro RTGS · Nov 2007 · 07:00-18:00 CET
CLSFX PvP · removes Herstatt risk
CLS membersSettlement member (account) · user member (sponsored)
Trap: Herstatt = one leg paid, other never arrives (1974).

Ch 2e · FOP, DvP, title, ASDA/CSDA

DvPSecurities final if and only if cash final
Ways to DvPRTGS · netting · CSD books · guaranteed cheque
CREST DvPModel 1 · central bank money
BearerNo name on register · fungible · holder bears loss
Registered certificatedTransfer form + reregistration
ASDACash moves on ACTUAL settlement; seller loses on delay
CSDACash moves on contract date; custodian risk
Trap: CSDA = provisional credit = custodian credit risk.

Ch 2f · Fails, fines, CSDR discipline

Buy-inSELLER fails · buyer buys elsewhere
Sell-outBUYER fails · seller sells elsewhere
EUI matching fine£4 at close T+1, +£2/day, max 30 days
EUI settlement targets85 · 90 · 95 · 98 · 99%
CSDR disciplineCash penalties · mandatory buy-ins · in force Feb 2022
Mandatory buy-inDeferred to Nov 2025
US fails claim floorUS$500

Ch 2g · Netting sums

MethodSign each leg, add shares and cash separately
ExampleBuy 7,000 (£28,000), sell 4,200 (£17,220) + 2,000 (£7,600)
Result+800 shares · pay £3,180
Trade date nettingThat day's trades only
CNSRe-presents fails · oldest first · kept in bigger position
Trap: check both columns. Shares can net to a receive while cash nets to a payment.

Ch 2h · Interest claims

FormulaNet × rate/100 × days/(360 or 365)
RateSELLER's overdraft rate
GBP day basis365/366
Example£219,000 × 4% × 5/365 = £120
Dispute / pay15 days / 30 days
Written offUnder US$500 or 30 days after actual settlement
Trap: calendar days, seller's rate, currency's day basis.

Ch 3a · Safekeeping (UK)

Reconciliation (not physically held)At least every 25 business days
Physical countEvery 6 months
Record retention3 years
DvP exemptionDue within 1 business day
Same-group custodianTell the client in writing
Non-complianceTell regulator in writing, without delay
Trap: 25 days = held by others; 6 months = physical count in-house.

Ch 3b · Shareholder reporting + nominees

Initial thresholdsUK 3% · HK/US 5% · Taiwan/Sri Lanka 10%
s793 CA 20063 year look-back
Legal titleNominee (on register)
Beneficial ownershipClient
Pooled / designated / soleOmnibus / unique ID / dedicated name
Omnibus votingOnly the nominee votes
Bare trusteeOnly when + as instructed

Ch 3c · Custody fees

Ad valoremBasis points on assets
Transaction feePer settlement
FormulaValue × bp ÷ 10,000
US$500m @ 1bpUS$50,000
US$2m @ 20bpUS$4,000
Emerging marketsHigher fees (risk, cost, less scale)

Ch 3d · Corporate action types

MandatoryCash dividend · bonus · split · consolidation · nil-paid rights issued
VoluntaryRights subscription · warrants · conversion · put
Custodian cut-offBefore = liable · after = best efforts
Floating-rate couponNot known in advance
Capital repaymentSame shares · lower nominal value
Unconverted convertibleRedeemed for cash
Trap: rights: ISSUE is mandatory, SUBSCRIBING is voluntary.

Ch 3e · Price formulas

BonusValue ÷ (old + bonus shares)
3,000 @ £1.00, 1:34,000 @ £0.75
Split 1-for-44× shares, ÷4 price
Consolidation 4-for-1÷4 shares, 4× price
TERP(old×old px + new×issue px) ÷ total shares
3,000 @ £2, 2:3 at £1.50TERP £1.80
Nil-paid rightTERP − issue price (£0.30)
Trap: 1:4 adds 25%; it does not quadruple. TERP lies between old and issue price.

Ch 3f · Voting + dates

Comply or explainCombined Code (as named)
Myners (Feb 2004)Lost votes · publish policy · automate · designated nominees
Before ex-dateCum: buyer entitled
On/after ex-dateEx: seller entitled
Ex-date-driven marketBuyer may need to claim
Special-ex / special-cumAgreed against the period's norm
Assurance on votingAAF 01/20 or SSAE 18

Ch 3g · Cash management

ForecastingShort: 1 day-2 wks · medium: to 1-2 yrs
SweepIdle cash to interest overnight
PoolingCombine balances for interest
Single-currencyOne-currency accounting · many FX trades
Multi-currencyDvP in foreign currency · complex recs

Ch 3h · Securities lending + repo

Legal title on loanPasses to borrower
Lender's votesLost unless recalled
Manufactured dividendBorrower pays lender
HaircutCollateral > loan value
DailyMark to market · margin calls
SFTRReport SFTs to a trade repository
RepoSell for cash, repurchase later
Tri-party repoAgent manages collateral
Trap: in a repo the party SELLING securities is the cash BORROWER.

Ch 4a · UK tax figures (2025-26)

Dividend allowance£500
Dividend rates8.75% · 33.75% · 39.35%
Personal allowance£12,570
CGT exempt amount£3,000
CGT rates18% / 24% · trustees 24% · BADR 14%
SDRT0.5% (none on gilts / UK corp bonds)
Trap: these are year-specific workbook figures. Use the ones in the exam question if given.

Ch 4b · Bonds + CGT

Gilts / QCBsCGT-exempt (individuals)
QCBSterling + non-convertible
Gilt stripsIncome tax annually · deemed sale
FOTRAFree of tax to residents abroad
Gain500 × (1.40−1.00) − £30 = £170
Matching orderSame day → 30 days after (FIFO) → S104 pool
S104 part-salePool cost × sold ÷ pool shares
De minimis100 − 0.25 × years to maturity
Trap: gilts exempt, gilt STRIPS taxed as income.

Ch 4c · WHT + reporting regimes

WHTAt source · reclaimed via DTT, usually by custodian
DTTs1,300+ · UK 100+ countries
QIIRS 2001 · report + withhold
FATCA2010 · 30% WHT if non-compliant
CRSOECD/G20 · automatic exchange · from 2017

Ch 5a · Risk types + Basel

BIS threeCredit · market · operational
Credit risk elementsIssuer · counterparty · settlement
Op risk subcategoriesTransaction-processing · legal · reputational
SystematicWhole market / segment
SystemicWhole financial system collapse
Basel II pillarsMin capital · supervisory review · disclosure
Basel III2013-2019 · risk-weighted assets
Trap: systematic vs systemic are not interchangeable.

Ch 5b · Reviews, SEC rules, assurance

Network managementFirst line of risk management
No indemnitySystemic shocks to CSD / payments
AIFMD / UCITS VDepositary restitution
SEC 17f-5Custodians: books, recovery, currency, expropriation
SEC 17f-7Depositories · 2001
AGC120+ Q questionnaire, annual
AAF 01/20ICAEW · replaced 01/06 (Jul 2020)
SSAE 18 / ISAE 3402Type 1 point-in-time · Type 2 6+ months
Trap: countermeasures: CCP = failing counterparty · four-eyes = wrong instructions · collateralised CSDA = DvP unavailable.

Exam-day metadata

Format50 questions · 60 minutes
Chapter weightsCh 3: 16 · Ch 1: 13 · Ch 2: 11 · Ch 5: 6 · Ch 4: 4
Heavy chaptersCh 3 + Ch 1 + Ch 2 = 40 of 50 questions (80%)
Calculation sweepNetting · interest claim · custody fee · bonus/split/consolidation · rights (TERP) · capital gain · S104 · de minimis
"NOT" / "EXCEPT" questionsRead carefully · pick the odd one out
Strategy: spend your best revision time on Ch 3 (32% of the paper, most of the arithmetic), then Ch 1 (recall of who runs what) and Ch 2. Ch 4 and Ch 5 are small but cheap marks: learn the numbers on the cards above.