Letmo Research

Records

2025-09 Monthly Record

Holdings at the month's last day, rebuilt from the trade log at that day's closing prices. Portfolio value, contributions and return come from the broker statements.

Record date 2025-09-30

Portfolio Value

$1,003,461

Principal $386,305 + Gain $617,156

Net Contributions

$1,877

Weighted net contributions -$2,395

Monthly Return

7.36%

SPY 3.56%

Monthly Gain

$68,479

SPY $33,152

Long Exposure

98.61%

$989,511 | 6 positions

Short Exposure

-3.39%

-$34,044 | 3 positions

Monthly Changes

Compared with previous record: 2025-08-31

Reduced Positions

  • GOOGL -33 shares
  • TSM -27 shares
  • TSLA short -8 shares

Closed Positions

  • AMZN 9 shares
  • QBTS short 100 shares

Label

Long

Ticker

GOOGL

Weight

51.36%

Shares
2,120
Average Cost
157.60
Gain
181,259
Exposure
515,348
Price
243.10
Return
54.25%

Label

Long

Ticker

KSPI

Weight

13.85%

Shares
1,702
Average Cost
98.43
Gain
-28,509
Exposure
139,019
Price
81.68
Return
-17.02%

Label

Long

Ticker

TSM

Weight

12.64%

Shares
454
Average Cost
197.67
Gain
37,056
Exposure
126,798
Price
279.29
Return
41.29%

Label

Long

Ticker

NVDA

Weight

12.35%

Shares
664
Average Cost
59.50
Gain
84,381
Exposure
123,889
Price
186.58
Return
213.58%

Label

Long

Ticker

AMD

Weight

7.55%

Shares
468
Average Cost
111.77
Gain
23,408
Exposure
75,718
Price
161.79
Return
44.75%

Label

Long

Ticker

RDDT

Weight

0.87%

Shares
38
Average Cost
164.65
Gain
2,483
Exposure
8,740
Price
229.99
Return
39.68%

Label

Short

Ticker

QUBT

Weight

-1.01%

Shares
-550
Average Cost
14.66
Gain
-2,065
Exposure
-10,126
Price
18.41
Return
-25.62%

Label

Short

Ticker

TMC

Weight

-1.14%

Shares
-1,800
Average Cost
6.98
Gain
1,105
Exposure
-11,466
Price
6.37
Return
8.79%

Label

Short

Ticker

TSLA

Weight

-1.24%

Shares
-28
Average Cost
313.69
Gain
-3,669
Exposure
-12,452
Price
444.72
Return
-41.77%
View full table
LabelTickerSharesAverage CostPriceGainReturnExposureWeight
LongGOOGL2,120157.60243.10181,25954.25%515,34851.36%
LongKSPI1,70298.4381.68-28,509-17.02%139,01913.85%
LongTSM454197.67279.2937,05641.29%126,79812.64%
LongNVDA66459.50186.5884,381213.58%123,88912.35%
LongAMD468111.77161.7923,40844.75%75,7187.55%
LongRDDT38164.65229.992,48339.68%8,7400.87%
ShortQUBT-55014.6618.41-2,065-25.62%-10,126-1.01%
ShortTMC-1,8006.986.371,1058.79%-11,466-1.14%
ShortTSLA-28313.69444.72-3,669-41.77%-12,452-1.24%

Deposits and Withdrawals This Month

DateAccountTypeAmountCounterpartyNet Contributions
2025-09-29FidelityDeposit8,000.00Fidelity Checking386,305.00
2025-09-19FidelityWithdrawal-2,000.00Fidelity Checking378,305.00
2025-09-16US BankWithdrawal-3,994.64US Bank Checking380,305.00
2025-09-15US BankWithdrawal-128.57US Bank Checking384,299.64

Trades This Month

DateAccountTickerKindActionSharesPriceAmountWeight BeforeWeight After
2025-09-29FidelityTSMStockSell-27.00276.247,458.3513.13%12.39%
2025-09-29FidelityTSLAStockCover8.00443.47-3,547.75-1.59%-1.24%
2025-09-29FidelityGOOGLStockSell-17.00247.624,209.5752.09%51.68%
2025-09-15US BankGOOGLStockSell-16.00249.673,994.6456.01%55.59%
2025-09-15FidelityQBTSStockCover100.0017.82-1,782.00-0.19%—
2025-09-15FidelityAMZNStockSell-9.00231.502,083.510.22%—

Notes

  • Prices, exposures, gains, returns, and weights are shown as of the record date and may not reflect current market prices.
  • Colored markers distinguish long and short positions; negative share counts represent short or synthetic short exposures.
  • Cash is generally held in money market funds. Additional liquidity, when needed, is obtained through box spread loans.
  • Average cost is the running average of the trade log across all accounts and can differ slightly from the cost a broker shows.
  • Shares and prices are adjusted for later splits to today's share basis, matching the trade log, so they may differ from how the statement of the time showed them.
  • A synthetic short (a short call and a long put at the same strike) is recorded as the stock it stands in for; single-leg options are not recorded.