Joshua Wilkosz

Engineer. Builder. Melbourne / Boston.

github.com/wilkosz | linkedin.com/in/wilkosz | [email protected]

Software engineer and technology lead. Mechatronics (Masters) and Mechanical Engineering (Bachelors), University of Melbourne. I like small, talented teams that move fast, and businesses with a real moat.

what i build | agent's take | portfolio | agent picks | ai bellwethers | next fortnight | companies i love | news | research log


What I build

Agent's take

last updated: 2026-08-27T14:40 (UTC)

What changed since the last run

Snapshot ~10:40 ET Thursday: Nvidia's after-hours gain held and grew, NVDA $224.88 (+7.3%), S&P 500 7,717 (+0.5%), Nasdaq +1.2%, SOX +1.8%, VIX 14.5; the rally is chips and software (MRVL +5.7%, AVGO +3.2%, CRM +13%) while MU -1.1%, AMD -0.9% and the Russell 2000 is flat. Asia closed mixed (Kospi +1.5%, Taiex +0.3%, Nikkei -0.2%, Hang Seng -0.3%, ASX 200 -1.0%) and Europe was lower late (Stoxx 600 -0.8%). Brent reversed to $88.96 (+1.3%) with Hormuz flows still a fraction of pre-war; 10-year 4.66%, AUD/USD 0.7195, bitcoin $79,900; jobless claims 203k vs 208k. Jackson Hole opened with KC Fed's Schmid hinting at hikes (September hike priced 31%), and Politico reports the administration is weighing semiconductor tariffs extending to servers and laptops. Ahead in AEST: Marvell ~6:30am Friday, BYD interims Friday, Warsh 12am Saturday, US August jobs next Friday 10:30pm.

Portfolio (what I'm invested in)

tickerweightagent take
AMZN:US2.5%hold — $256.90 intraday, down 1.3%, giving back the after-hours pop while the Nasdaq is +1% on Nvidia; nothing company-specific beyond the 2M-GPU order already noted. Small new items: Mechanical Turk closes Sept 30 and Amazon signed a Labor Department data-sharing MOU on AI and jobs. Hold.
AXOS:US0.4%hold — $96.50 intraday, down 1.6%, at 10:21 ET with no company news since Tuesday's NYSE Texas dual listing; only 13F position notes overnight. Benchmark's $120 target is unchanged, hold.
BABA:US0.9%watch — ADR $116.25 intraday, down 3.0%, after 9988.HK closed Thursday at HK$115.50 (-0.9%, range 115.10-117.40), 2.5% above the HK$112.70 placing price. Baird trimmed its target to $160 from $164 and Citi to $190 from $192, while JPMorgan lifted to $210 Overweight; Alibaba Cloud opened two Brazil data centres (now 106 zones in 31 regions). Fourth session above the placing price but still no base, keep watching for a hold above HK$117-118.
ENPH:US1.4%watch — $38.75 intraday, up 0.9%, a small follow-through on Wednesday's +2.85%. Alongside the FCC Covered List, Trump signed an order (Aug 26) barring purchase of certain foreign-made bulk-power equipment; both narrow foreign supply, but Enphase already builds microinverters in Texas and South Carolina so the direct benefit is limited, and Wednesday's press framed SolarEdge as the winner. Q3 guide $290-320M is still below last year, stay on watch.
FIGR:US6.4%hold — $37.50 intraday, up 1.1%, a modest bounce after Wednesday's -9.9%. No 8-K, press release or new Form 4 on Aug 27; the only filing remains the CFO's 8,000-share 10b5-1 sale, and MarketBeat's midday snapshot showed volume 91% below average, so the drop reads as thin-tape selling rather than news. Consensus target $50.62 with Q2 revenue +121%, hold.
GOOGL:US1.0%add — $339.35 intraday, down 0.8%, lagging the Nasdaq's +1%. Wolfe reiterated Outperform with a $460 target, raised 2027 revenue 10% to $595B and EPS to $15.89, and models Google Cloud +125% y/y in Q3 vs 87% consensus. Offsets: TechCrunch's OSHA data show 16 Waymo test-driver injuries in 2024-25 (5 then 11) and Bloomberg headlines a $692B market-value drawdown from the peak. About 5% under the 50-day, still add on the dip.
LDI:US0.3%trim — $0.97 intraday, up 9.6%, but a sixth session under the $1 NYSE threshold and no news since the Aug 21 deficiency notice and Goldman's $1 Sell target. A thin-tape bounce does not change cure-window, reverse-split and dilution risk; use the strength to trim.
META:US5.1%hold — $574.79 intraday, down 0.2%. Street reaction is uniformly Buy: Citi ($800) says teens are under 1% of revenue, expects a ~$10B Q3 accrual and notes the deal is far below the $200B-$1.4T once contemplated; KeyBanc $780, UBS $715, Truist trimmed to $763 from $770. Still open: New Mexico appeal and ~1,200 school-district cases; no Hatch or Connect news. Overhang lifted, capex return still unproven, hold.
MRVL:US0.9%hold — Intraday $246.00 (+0.4%) after a +4-5% premarket and a $254.60 high; the Nvidia pop has been sold into ahead of tonight's print (call 4:45pm ET, 6:45am AEST Friday). Setup: $2.72B/$0.93 consensus, Q3 guide bar ~$3.03B with JPMorgan looking for ~$3.1B; Kalshi has 83% odds of an EPS beat. Watch custom XPU revenue and the pipeline (last 50+ opportunities, $75B, should rise after the Google warrant deal tied to $120B of potential purchases), Trainium ramp commentary, and Celestial AI optical monetisation; consensus target $258.42 (range $105-400) against a stock up ~188% YTD, so the guide has to clear $3.03B cleanly. Hold through the print.
MU:US2.1%hold — Intraday $928.00 (-1.1%) after opening +3% to $968.71 and $974 after hours; the memory read-through faded into profit-taking while SK hynix ADR held +3%. Follow-through on Nvidia's memory comment is supportive: Barron's frames it as Nvidia calling memory prices outrageous and still paying, and Trefis details 16 take-or-pay agreements covering ~20% of DRAM and a third of NAND volume over ~5 years, 14 with price floors worth ~$100B of minimum revenue and $22B of deposits, though caps at CQ2-2026 price levels limit upside on existing products; FQ4 gross margin guide ~86%. Intraday weakness is positioning, not fundamentals; hold.
NFLX:US0.6%add — Intraday $79.80 (-2.0%, range $79.28-81.15), giving back this week's Wolfe-driven bounce with no company news; no Nvidia read-through. Today Netflix premieres Grand Theft Auto VI: An Extended Look at 3pm ET, 26 minutes of PS5 footage, six hours before YouTube (9pm ET), an engagement and ad-inventory test ahead of the Nov 19 game launch. Consensus target $103.19 and 2026 free cash flow guide ~$11B; the dip is an add.
NVDA:US0.8%hold — Intraday $224.88 (+7.3%) at 10:40 ET Thursday, extending the after-hours gain as the Street repriced: Raymond James $515 (from $352), Truist $346, Wedbush $345, RBC $330, UBS $300; consensus ~$321. Q2 FY27 revenue $96.2B (+106%) beat by $4B, Q3 guide $108B vs the $104.2B bar, FY28 ~+70% and supply-constrained; margin troughs 71-72% in Q4 on memory costs. Watch items: supply commitments $279B (from $119B), DSO 60 days, $108.5B of revenue guarantees to labs it finances, and an unconfirmed $12.9B Hugging Face deal. Hold.
RKT:US0.4%hold — Intraday $14.04 (+1.0%), a small bounce after Wednesday's -2.8%. The 10-year is 4.662% (-0.2bp), Mortgage News Daily's 30-year was 6.75% Wednesday and WSJ's daily read is 6.73%; Freddie Mac's PMMS is due at 12:00 ET (2am AEST), last week 6.65%. Nothing company-specific; hold.
TSM:US0.6%add — ADR $425.35 (+1.8%) intraday, range $420.53-425.55. Taipei was flatter: 2330 closed NT$2,410, -0.21% (range 2,410-2,435) as the Taiex gave back most of a 500-point open to finish +0.31% at 45,975.22 on NT$924.68B turnover. Nvidia's 70% FY28 growth and UBS's ~19-20GW 2027 shipment estimate are TSMC volume; still ~5% under the June high, add.
STRIPE:private16.7%hold — New in the last 12h: Stripe agreed to buy Clerky (announced Aug 26, terms undisclosed; Clerky handles 23% of Silicon Valley seed/pre-seed financings and its startups have raised over $140B), DBS signed a partnership across its 19 markets for cross-border payments and agentic-AI commerce (Stripe cited $1.9T of annual volume), and Drew Turchin was hired to run the stablecoin card business with July stablecoin card spend at $642M and cumulative over $4.5B. No round, tender or secondary; hold. Marked at 2.27x cost: latest valuation ~$159B (2026-02) vs ~$70B at entry (https://techcrunch.com/2026/02/24/stripes-valuation-soars-74-to-159-billion/).
OPENAI:private60.0%hold — New: the Georgia PSC approved Georgia Power's 3,200MW contract for OpenAI's Effingham County data center, with OpenAI fully funding the infrastructure and offering up to 1,000MW of flexible demand response (Georgia Power projects ~$15/month residential savings from 2029); Australian police arrested two Perth men over the TeamPCP supply-chain hacks that hit OpenAI, Mercor and GitHub (500k+ credentials, 1,000+ organisations); WSJ reports OpenAI is the sole investor in its latest venture fund; Nvidia's reported $12.9B Hugging Face deal would put the main GPU supplier in the model-distribution layer. Power and governance news, no new mark; hold. Marked at 5.43x cost: latest valuation ~$852B (2026-08) vs ~$157B at entry (https://techcrunch.com/2026/08/10/openai-reportedly-completed-a-7-billion-employee-tender-offer/).

weight = share of portfolio by estimated value: public holdings at last research-run prices, private holdings at cost marked to the latest reported valuation.

Agent picks (researching for future growth)

AI

Internet

Machinery

Energy

AI bubble bellwethers (is compute being sold at a discount?)

The single best AI-bubble bellwether is the rental price of an installed Nvidia GPU, measured in dollars per GPU-hour, and specifically the H100: it is the daily marginal clearing price for AI compute, it is published by independent indexes (Silicon Data's SDH100RT, SemiAnalysis's one-year contract index), and from October 5, 2026 it becomes a CME futures contract, so the market will show a forward curve as well as spot. Right now it is saying the opposite of discounting: the Silicon Data index sits at $2.53/hr, one-year contract rates rose about 40% from $1.70 to $2.35 between October 2025 and March 2026, spot has run at roughly twice contract, and a four-year-old chip is renting for more than it did a year ago while CoreWeave says it has contracted 2020-vintage GPUs out to 2029 at full price. Pair it with three things: neocloud credit spreads (CoreWeave's July loan cleared at SOFR+550 for a 10.44% yield with maintenance covenants, and its CDS implies roughly a coin-flip default probability), which is the financing leg and the one signal already flashing red; server DRAM and HBM contract-price momentum (+13-18% QoQ in 3Q26 after +93-98% in 1Q26, with 4Q26 guided to only +3-8%), because memory is the first physical input that will roll over; and hyperscaler backlog growth versus capex growth (Microsoft commercial RPO +84%, Oracle RPO +363%, roughly $2.4 trillion of committed cloud backlog against about $1 trillion of 2026 capex), because the bubble only deflates if the buyers stop signing. Over the next one to two quarters watch Nvidia's August 26 print for gross margin and customer concentration (three direct customers were already 54% of revenue), the shape of the CME H100/B200 curve once it lists (a steep backwardation would be the first public forecast of discounting), whether 4Q26 memory contract talks and 2027 HBM4 pricing turn negative, and what ERCOT's December audit says about how much of Texas's 474 GW interconnection queue is phantom demand. The threshold that would flip the call is simple: the H100 index sustained below about $2.00/hr, or spot trading below the one-year contract rate, while Blackwell and Rubin volumes keep arriving; until then compute is being sold at a premium, not a discount, and the risk lives in who is borrowing to build it rather than in the price of the product.

indicatorreadingtrendsignalwhy it matters / what to watch
H100 rental price, $/GPU-hour (Silicon Data index; 1-yr contract and spot)
2026-08-27
$2.67/hr index (+0.4% 7d); 1-yr contract $2.35 (Mar-26) vs $1.70 (Oct-25); spot ~$4upbullishThis is the marginal clearing price of installed AI compute and the most direct public read on whether capacity is being discounted; it is published daily and becomes a CME-listed futures contract on Oct 5, 2026.
watch: Bearish flip if the Silicon Data H100 index holds below ~$2.00/hr for a month, if spot trades below the one-year contract rate (inversion), or if the CME H100 curve lists in steep (>15%) backwardation; the Oct-2025 trough of $1.70 is the floor to remember. — source
B200 / Blackwell rental price, $/GPU-hour (on-demand)
2026-08-27
$5.50-7.00/hr at neoclouds (RunPod B200 $5.98-6.79, Lambda $6.69-6.99); RunPod B300 $6.94-7.89; Silicon Data B200 index $5.65; ~$5 in Jan-26upbullishBlackwell is where new supply lands, so this is the first place a glut would show; if B200 rates fell toward H100 rates while Rubin ships, capacity would be outrunning demand.
watch: Bearish if tier-1 neocloud B200 on-demand drops below ~$4.50/hr, if the B200/H100 price ratio compresses below ~2x, or if lead times for 8-GPU Blackwell nodes fall to same-week availability. — source
Legacy-GPU residual value: used H100 prices, A100/H100 rates and booked useful lives
2026-08-25
2020-vintage GPUs contracted to 2029 'at full freight'; MSFT servers 2-6 yrs, Meta 5.5 yrs (no 2026 stretch)flatbullishDepreciation is the biggest cost in a GPU cloud; if old chips still earn money the 5-6 year accounting lives hold and no write-downs are coming, whereas collapsing used-H100 prices would be the first hard evidence of oversupply.
watch: Bearish if 8-GPU H100 servers trade below ~50% of new-build cost on the secondary market, if A100/H100 rental rates fall below ~$1.50/hr, or if any hyperscaler extends server lives beyond 6 years to flatter earnings; also watch for Hopper impairments at neoclouds. — source
All-in AI data-center build cost, $ per GW (with GPUs / ex-GPUs)
2026-08-25
~$47B/GW Vera Rubin (≈$32B racks + ≈$15B shell/power/cooling); ~$1.3B/yr electricityupneutralCost per GW sets the revenue a campus must earn per GPU-hour to clear its cost of capital; rising cost means supply is constrained (good for rental prices) but raises the bar for returns and the size of the debt stack.
watch: Discounting signal if Nvidia rack ASPs or $/GW start falling (Nvidia gross margin guided below ~72%, rack prices cut) while rental $/hr does not rise; bubble-risk signal if ex-GPU cost (power, shell, turbines) keeps inflating faster than rental rates. — source
Server DRAM / HBM contract price momentum (QoQ) and DRAM spot
2026-08-27
+13-18% QoQ 3Q26 (after +93-98% 1Q26, +58-63% 2Q26), 4Q26 guided +3-8%; 2027 HBM contract seen +70-140% (TrendForce); memory = 68% of major CSP capex in 2027 (47% in 2026); Nvidia supply commitments $279B (+134% q/q, mostly memory); DDR5 16Gb spot $53.93 (-0.1% d/d)upbullishMemory is the tightest physical input to AI servers (HBM is 25-30% of a Rubin rack) and contract prices are negotiated quarterly, so this is the earliest cyclical input to turn; a price rollover would precede GPU discounting.
watch: Bearish when server DRAM or HBM contract prices go negative QoQ (TrendForce already guides 4Q26 to only +3-8%), when 2027 HBM4 contracts are signed at lower prices, or when DRAMeXchange DDR5 spot falls >20% from peak; also watch whether CSPs start cutting memory per system, which TrendForce now flags as their cost response. — source
Power constraint: ERCOT interconnection queue, gas-turbine backlog and lead times
2026-08-25
474 GW ERCOT requests across 1,800+ projects (~427 GW data centers) vs ~193 GW installed; GE Vernova turbine backlog 116 GW; ~5-7 yr lead timesupbullishPower, not chips, is now the binding constraint on new capacity, which keeps installed GPUs scarce and rental prices firm; it also reveals how much announced demand is speculative once regulators force projects to prove financing.
watch: ERCOT files its Batch Zero eligibility-verification and community-impact reports by Dec 10, 2026 for the Dec 17 PUCT open meeting, with RFIs going out Aug-Sep and cure periods Oct-Nov: large queue withdrawals (BNEF flags 49.8 GW at risk) would show phantom demand. Turbine slot cancellations or resales, falling data-center PPA prices, or turbine prices retreating from the $600/kW 2027 forecast would signal the build is slowing. — source
Hyperscaler capex vs cloud backlog (RPO) growth, and capex as % of cloud revenue
2026-08-27
2026 capex ≈ $1.0T (102% of cloud revenue); backlog ≈ $2.4T (MSFT $678B +84%, ORCL $638B +363%, GOOG Cloud $514B, AWS $496B); AWS Nvidia GPU commitment 3M+ (1M 2026 + 2M 2027-28); Nvidia supply commitments $279BupneutralCapex is the supply side and RPO is the contracted demand side; as long as backlog grows faster than capex the build is pre-sold, but capex above 100% of cloud revenue with negative free cash flow means the cycle is now funded by debt and equity and is sensitive to any demand wobble.
watch: Bearish if RPO growth decelerates below capex growth for two quarters, if 2027 capex consensus (+57% per Morgan Stanley) gets cut or 'digestion' language appears, or if backlog concentration in a few AI labs (OpenAI, Anthropic) produces a cancellation or renegotiation. — source
Neocloud financing: CoreWeave loan/bond spreads, CDS, vendor backstops, customer concentration
2026-08-27
CoreWeave Jul-26 $2.6B loan at SOFR+550, 10.44% YTM; CDS ~855bp (Jul 29); Nebius $5.75B converts closed Aug 24 (0.50% 2030 / 4.50% 2034, greenshoe fully exercised); Nvidia: ~25% of FY28 revenue from labs it finances, ~12 GW OpenAI + ~2 GW second-lab credit supportflatbearishNeoclouds are the levered marginal builder of GPU capacity; their cost of debt, covenants and dependence on Nvidia backstops show whether lenders still believe rental prices will cover depreciation, and they are the first place a compute-price decline turns into forced selling.
watch: Escalation if new deals price above SOFR+600 or 11% yields, CDS above 1,000bp, deals pulled or downsized, Nvidia's rent-back backstop extended to tier-1 neoclouds, or a top customer (CoreWeave's A/B/C are 36%/26%/10% of revenue) renegotiates; improvement if spreads retrace toward the April 9.75% level or if CoreWeave can tap convertible/equity-linked money on Nebius-like terms. — source
Nvidia data-center revenue growth, gross margin and customer concentration
2026-08-27
DC rev $89.0B +117% YoY, +18% QoQ (Q2 FY27); GAAP and non-GAAP GM 75.0%; Q3 guide $108B +/-2% at 74% GM, Q4 GM trough 71-72%; FY28 prelim +~70%, supply-constrained through FY28; supply commitments $279B (+134% q/q); DSO 60 days (was 45); ~25% of FY28 revenue from financed labs; no China DC compute in outlookupbullishNvidia's margin is the purest read on whether GPUs are being discounted at the source, and its concentration plus growing vendor-financing (backstops, campus guarantees) shows how much of demand is circular.
watch: Bearish if gross margin is guided below ~72% for more than one quarter, data-center revenue grows <5% sequentially, three-customer concentration exceeds 60% in the 10-Q, DSO climbs past 60 days, or backstop commitments expand beyond the $108.5B disclosed; Q3 FY27 report due ~Nov 2026. — source

signal is from the AI-infrastructure investor's view: bullish = still supply-constrained, bearish = compute being discounted / oversupplied.

Next fortnight (what to watch or listen to)

2026-08-27 to 2026-09-10 (UTC dates). Times as published by the source.

Thu 2026-08-27

Fri 2026-08-28

Mon 2026-08-31

Tue 2026-09-01

Wed 2026-09-02

Thu 2026-09-03

Fri 2026-09-04

Mon 2026-09-07

Tue 2026-09-08

Wed 2026-09-09

Thu 2026-09-10

Companies I love

News

2026-08-27

2026-08-26

[+] positive, [-] negative, [n] neutral

Research log


Nothing here is financial advice. Holdings and opinions are my own; the "agent" sections are written by an automated research skill and may be wrong. Built 2026-08-27 19:31 UTC.