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m*******e 发帖数: 1431 | 2 sephora八折已经过了,近期估计是没有了,看看大商场现在有没有什么送大礼包,送
gc的活动。
粉底口碑比较好的有:阿玛尼,bobbibrown的一款什么虫草粉底液,雅诗兰黛也有很多
人推荐,还有tom ford的什么圆管,兰蔻的气垫粉口碑也很好。
粉饼嘛,cpb(肌肤之钥匙),但是很贵,盒子和内容分开卖的,加起来得一百多刀。
还有日本的suqqu,也很贵,据说是一试就会欲罢不能。再降一个档次,burberry的很
多人也喜欢,大概50多刀。其实开架的品牌里就有一些不错,美宝莲的FIT ME,淡粉色字
的那款特别适合干性皮肤。
眼影:现在还是流行不夸张的大地色系,这是经久不衰。如果想买大盘给妈妈,首推
urban decay naked1就
不错,比较日常百搭,还有一个在sephora里的小众品牌Ciate颜色也不错,不过粉质个
人感觉比urban decay还是差点。小盘的眼影日本的kate很受达人推崇,在日本很便宜
,这里买差不多20刀一小盘,不是很划算。另外,还是Tom ford的眼影也是超美超美的
,但是也贵,四色80刀
口红和唇彩:ysl系列,tom ford系列,植村秀系... 阅读全帖 |
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l*****o 发帖数: 73 | 3 1. 看起来你还是不明白贸易逆差跟债务的关系.
你应该 "beat your nerves",http://www.bloomberg.com/news/2011-04-10/stiglitz-calls-for-new-global-reserve-currency-to-prevent-trade-imbalances.html
2. 如果你认为美国制造业产出仍然年复一年地增长是"decaying",我赞成你;如果你认
为美国不再生产衣服鞋袜这些东西,或者让人廉价代工一些低端产品是美国制造业"
decaying",我赞成你;
3. 资源有了,剩下的就是利用了,如何利用就是我在正文里指的革命啊.知道当年汽车用
什么驱动吗,后来是怎么一步步让价钱降下来的吗? 更何况现在已经有了天然气汽车了,
这样的技术发展会很难吗? 而其本来我原文主旨是指出所谓的能源危机是不可能发生的
.100多年前就有人担心煤用完了怎么办,今天你还担心吗?
as
yes,
use
discussing |
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T*****E 发帖数: 1432 | 4 index futures有意义,可以hedge自己的portfolio——类似option,不过没有option
的time decay,比ETF的leverage大,也没有3x, 2x ETF的decay (参考FAS/FAZ)
所以严格意义上说,index futures是最好的hedge工具! |
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J******s 发帖数: 913 | 5 TNA/TZA are 3X ETFs that decay over time. It is OK to hedge in short time
period, but do not hold them for a long period. On average, each of TNA/TZA
decays about 0.14% per day.
You can short TNA to replace TZA. |
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r*m 发帖数: 16380 | 6 put is expensive and can expire, requires very good timing.
my strategy is short and hold, let it decay, let it decay.
It's time, not timing, that makes money. |
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k*********u 发帖数: 2897 | 7 这个股票是赌博工具,有time decay, 而且decay得非常快,
很难捂的。
一旦方向不对,抓紧时间割,要不一条大腿就没了。
这个版上,猛哥忽悠青蛙玩FAZ,害了不少人。 |
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c********t 发帖数: 4527 | 8 ai, option 难呀。tons of calls are decaying too.
haha
decay |
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S******s 发帖数: 914 | 9 没有任何办法。任何交易都要有买卖两方,没有bid只能等它decay. 并且越靠近oe day
, decay加速。这算option常识吧,呵呵。 |
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M*M 发帖数: 1993 | 10 简单的说,ETF有time decay的问题
如果1x, (1-x)*(1+x) = 1-x^2
3x: 1-9x^2
也就是说假设金融指数上涨10%,再下降10%回到原点,金融指数本身不变
但是faz或者fas就只有0.91了,
只要市场有波动,这个decay本身就会吃掉你大部分成本
版主mark一下吧,算是给所有准备玩3x的青蛙一个警示
3x只适合短线,不能长期hold,最好不要买etf,都是mm吸血的工具
去年faz/fas这些etf,margin可以狂高,相信受害的人不少 |
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E*******r 发帖数: 2723 | 11 ☆─────────────────────────────────────☆
rim (可乐会捂帮帮主) 于 (Thu Apr 8 16:07:54 2010, 美东) 提到:
08年我是亏大发了,但大家一起亏啊。
现在倒是没怎么大亏,但眼瞅着大家都在轻松赚大钱,我还只能看着我的put慢慢decay
。
☆─────────────────────────────────────☆
xdatou (datou) 于 (Thu Apr 8 16:09:54 2010, 美东) 提到:
tong 郁闷
☆─────────────────────────────────────☆
facelittle (facelittle) 于 (Thu Apr 8 16:13:03 2010, 美东) 提到:
前几天你的一个股票不是刚百分之几十? 淡定,淡定~
decay
☆─────────────────────────────────────☆
classa (直升神界) 于 (Thu Apr 8 16:13:18 2010, 美东) 提到: |
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z****n 发帖数: 1514 | 12 In short to mid term, they are similar.
In long term, (1) short has limited profit and unlimited loss.(2)short can
earn time decay value built into FAZ or FAS while long will lose time
decay value in the opposite. YMYD. |
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d****a 发帖数: 2901 | 13 decay? what decay? leap 和本月的能比吗? |
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d******e 发帖数: 6945 | 14 你的帖子我要回。
time decay的因素我考虑到的,我自己的交易里面就是规定自己的交易持仓不可以过3
天,最多5天,原因就是我计算过time decay rate,SPY平均5天能衰减一个百分点,对
应option衰减10-50%之间(看距离到期日的时长)。
因为是演示交易,所以想做一把超长时间的。觉得SPX能到1140,但是因为买入点太差
的原因,折了。 |
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b******r 发帖数: 16603 | 16 靠,烧了XXV,回头想想不对,这玩意儿是不是赚decay的?俺反手一烧,又把
decay吃回自己家了。 |
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s********u 发帖数: 1054 | 17 这个JASON 可能数学不怎么好, 所以会建议 用有LEVERAGE 的ETF 长期投资。除开 DOUBLE DOW 以后更高的风险不论, DOUBLE 或者 THREE TIMES 的 ETF 长期会有比较严重的TIME DECAY。
有 LEVERAGE 的ETF TRACK UNDERLYING 的 INDEX, 但是它一般只可以保证每天的涨跌 MATCH 它追踪的 INDEX。 我们来看一个很简单的例子。假设 DAY 1 DOW 是10000, 而你买了10000元的DOUBLE DOW。DAY 2 DOW 涨到 11000, 10% 的GAIN。 那么 你买的DOUBLE DOW 涨到 12000。假设DAY 3 DOW 跌到 10000,一个 大概 0。091 的LOSS。 这样 你买的 DOUBLE DOW DAY 3 的 VALUE 是 12000( 1-2/11)=9818。12。 这样 DOW 是 FLAT 的, 但是 DOUBLE DOW 已经让你亏损192元。
同样的原理对 INVERSE 的ETF也成立。 MARKET 越VOLATILE,LEVERAGE ... 阅读全帖 |
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m********0 发帖数: 2717 | 18 这个叫time decay不合适吧。
你举那个例子不过是因为
(1+x)*(1-x)<1
但是
(1+x)*(1+x)>1+2x
横盘 + high volatility对ETF很不利。而且都有50bp 以上的手续费。
同意NX ETF不适合长期持有,除非你有非常强烈的单边市场的远景。
跌 MATCH 它追踪的 INDEX。 我们来看一个很简单的例子。假设 DAY 1 DOW 收盘时 是
10000, 而你在收盘时买了10000元的DOUBLE DOW。DAY 2 DOW 涨到 11000, 10% 的
GAIN。 那么 你买的DOUBLE DOW 涨到 10000*(1+2*1/10)=12000。假设DAY 3 DOW 跌到
10000,一个 大概 0。091 的LOSS。 这样 你买的 DOUBLE DOW DAY 3 的 VALUE 是
12000( 1-2/11)=9818。12。 这样 DOW 是 FLAT 的, 但是 DOUBLE DOW 已经让你亏损
192元。
LEVERAGE 用的越多, 时间越久,TIME DECAY 越厉害。 最后举一个实际的例子。2009
年... 阅读全帖 |
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B**********r 发帖数: 7517 | 19 I sell "modified" ITM straddles on 3x ETFs. It is very safe.
Let us say we can sell FAS straddle: ITM calls/puts. I don't want to own any
long positions of these ETFs because of the hidden time-decays. So my "
modified" straddle is defined as:
FAS calls/FAZ calls. I get both the premium and the time-decay value. If
things go really bad, say the market move huge in one direction, I may lose
some value. I am not worried. I am ready to hold short positions of any of
these 3x bull/bear ETFs, and use... 阅读全帖 |
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S*******k 发帖数: 106 | 20 I have an option trade idea that I want to share with you guys. People
always talk about shorting FAS is better than buying FAZ because 3x ETF
decay quite quickly. If that's the case, we can sell FAS calls to collect
double-decay, right?
If the market volidity is the concern, we could sell FAS calls in 1-2 months
instead of the current month call.
Do you guys think this is a good idea? Please share your thoughts on this
with me. |
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B*****e 发帖数: 2413 | 21 Do you know that as an ETF, FAZ has a natural decay? FAZ is only designed
for short term.
http://finance.yahoo.com/q/ta?s=FAZ&t=2y&l=on&z=l&q=l&p=&a=&c=f
Theoretically, FAS and FAZ should be perfectly symmetrical each other to X
axis; however, they deviate from x axis dramatically due to natural decay
(ETF operation cost). |
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a*****n 发帖数: 5158 | 22
没有time decay or decay much slower |
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t****g 发帖数: 35582 | 23 那要是一个月涨到100,你不是要哭死了? 呵呵。
这个东西只有你估计上涨空间不大的climax run锁定profit才用。而且你需要相当大的
资金,
比如你做10个contract,买stock需要86K。而且option的time decay不是线形的,最后
一周
在ITM和OTM附近晃荡得option才会很快decay,而且还跟volume有关。
回头你这个position进去了以后,第一周给你来个77块甚至更低。option可能还能值3
块,但是你
stock早就hedge不住了。一旦你捏不住即使回头涨回来你也撑不下去。
option的价格是underlying的price, voluem, exp. date三个变量的函数,不是你想的
那么简单的。
这东西怎么弄,什么时候入,underlying什么时候变化,变化多大你的risk exposure
多高,需要有个
模型来算的。
covered |
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B**********r 发帖数: 7517 | 24 I short:
(1) FAZ, and am paying 4% interest rate to Fidelity for the borrowed shares.
(2) this month's TZA call
(3) this month's TNA call, which is heavier than TZA call
I will just collect the option premium, and let them decay. So basically I
get both the premium and the ETF decays over time.
Once I have a decent profit in a shorted call, I do NOT close it. I short
its opposite's call. Say, I shorted FAZ/TZA call first, and then later short
FAS/TNA calls.
It is important to control your positi... 阅读全帖 |
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g********5 发帖数: 10335 | 25 LOL
Future 还好呀 没啥time decay 我都是在time decay上亏钱
【 在 zijing (紫晶) 的大作中提到: 】 |
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L*******n 发帖数: 3169 | 26 我这么说吧,三倍etf的好处不仅仅是time decay
事实上time decay的确不那么的重要 |
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B**********r 发帖数: 7517 | 27 The gain/loss of playing TNA/TZA/FAS/FAZ options:
Buy Calls: you LOSE on premium, and LOSE on volatility decay.
Buy Puts: you LOSE on premium, but GAIN on volatility decay.
Sell Puts: you GAIN on premium, but LOSE on volatility delay.
Sell Calls; you GAIN on both
If you want to play for gains, sell all deep ITM calls when volatility is
high. Just may sure you keep a balance between long and short. And more importantly be conservative (ask yourself, what if DOW drops 2000 more points, or gain 20... 阅读全帖 |
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j***b 发帖数: 5901 | 28 你好像算错了。过去一年不是tza/tna各平均每天decay 0.15%,而是他俩decay相乘是0.15%。
不过你总算能看出这是个很保守的trade,不想有的根本不懂option的一位这个风险有多高。
the
. |
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B**********r 发帖数: 7517 | 29 I meant this year, 2011. TNA lost 50%, and TZA gain 23.6%. Time decay causes
TNA/TZA value drops to (1+23.6%)*(1-50%)=0.62. Time decay is 0.15% per day
for each, as (1-0.15%)^{157}=0.79, and 0.79^2=0.62.
Volatility was higher recently, almost 1% per day.
是0.15%。
有多高。 |
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B**********r 发帖数: 7517 | 30 I agree. That is why I assumed only the 0.15% decay per day (we have this
rate in 2011).
If I use the decay rate during the past 2 weeks, TNA/TZA will both be below
$1 by 1/19/2013. |
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l****t 发帖数: 1379 | 31 不要被decay搞怕了. 严格的说, 都有decay. |
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x********e 发帖数: 2275 | 32 别做梦了,time decay人人都知道,早就price in了。
股市里没有内幕消息,还想投机的,就是给别人送钱。
-----------------------------------------------------
发信人: hatwin (傻就一个字), 信区: Stock
标 题: Re: 大牛给讲讲,short FAS跟买FAZ到底有啥区别
发信站: BBS 未名空间站 (Wed Oct 5 09:17:19 2011, 美东)
因为FAS和FAZ都是3X ETF,都有time decay.
这个和option一样,卖出或者short,除了顺应波动以外,还可能额外赚取time value。 |
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B**********r 发帖数: 7517 | 33 You do not know much. See the leveraged ETF posts. The key is to balance
your short FAS/FAZ. FAZ decays twice as fast as FAS. It might be a good idea
to short more FAZ than FAS, and hold till they decay.
A almost sure win. |
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b******r 发帖数: 16603 | 34 靠同时烧3X ETF来赚decay在过去两个月的range market可以,在趋势单边
市场里不划算。以前副所做过很长一个时段的back test,数据说明了不是
非常容易的,进出点也很重要,还要经常rebalance,中间还要看broker的脸色祈祷不
要被强行平仓。
纯粹要吃decay,就直接sell options好了。 |
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j***b 发帖数: 5901 | 35 Shorting thess ETF's causes huge up and downs to your account.
That's what people call risk. The more you "rebalance" it, the more you cancel out the decay effect. For example, if you rebalance it on the daily bases, there will be no decay at all. |
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r*m 发帖数: 16380 | 36 跟您请教个事。
FAS和FAZ都是3X, 我以为是对称的。假如underlying的asset是随机运动, 那么FAS和
FAZ的compound decay似乎也应该是相当的。但实际上FAZ比FAS的损失要快。请问这是
最近这两年市场走势造成的,还是数学上决定的?(也就是说这个decay并不是完全对
称的)
谢谢! |
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B**********r 发帖数: 7517 | 37 In a bull market, typically volatility is low. It might be more dangerous to
short bull ETFs, because they do not decay fast enough.
In a bear market, VIX is usually high. Bull ETFs were killed by the drooping
index, and bear ETFs are hurt by the high volatility.
So it is always a good idea to short more bear 3x ETFs than bull 3x ETFs.
In addition, 3x bear ETFs decays twice as fast as 3x bull ETFs. |
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h****n 发帖数: 3447 | 38 GS这个企业和3X ETF很像。赚钱的时候很厉害,亏钱的时候也很厉害。而且有个共同点
,随着时间,不论大赚或者大亏,一部分钱反正是没有了,3X ETF time decay掉,GS
红包分掉。不论市场怎样,不变的只有time decay 和红包。其他都是浮云。呵呵 |
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j***b 发帖数: 5901 | 39 Do you know how much money you earn from "time decay" today?
About 0.34%. So if you shorted $10,000 worth of TZA or TNA, you earn about $
34 from time decay. Hooray!! |
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r***k 发帖数: 13586 | 40 If there exists a trend for the market, then stop loss will not cancel all
the time decay benefit. For example, if there's 70% chance market going up,
then in 70% cases I enjoy the time decay benefit by shorting FAZ, 30% chance
I stop out.
100 |
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B**********r 发帖数: 7517 | 41 你懂个屁!
Shorting 3x ETF pairs = 高抛低收 + Decay获益
Longing 3x ETF pairs = 追高杀低 + Decay损失 |
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j***b 发帖数: 5901 | 42 This is stupid.
It's not 高抛低收 + Decay获益.
Decay is from 高抛低收. If you add, you are counting it twice.
This is an insult to human intelligence. How can people be this stupid? I
explained this a hundred times and you just don't understand.
If you short $10000 tza and it dropped 15%, you are basically equivalent to someone who long $30000 of iwm and reduce position to $25500 when it goes up 5%. There is absolutely no fucking difference. |
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n*****r 发帖数: 159 | 43 还有如果你是18号上午买的,到今天可以算1.5天的time decay,对12月的option,大
楷是2.4/30*1.5=.12
一般来说Nearest expire 的option time decay是最快的。
买call/put Far Exp.其实更合算,虽然看起来归很多 |
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j***b 发帖数: 5901 | 44 The way TZA and TNA make their daily adjustment doesn't always harm long
positions, sometimes it benefits long positions. For example, when the
market dropped for 7 consecutive days like last couple of weeks, TZA and TNA
longers suffers no decay at all. They actually gains. Actually, TZA longers
just needs to reduce position and TNA longers just need to increase position at the end
of the 7th day to do away with any "decay" that the drop will cause. |
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p*******o 发帖数: 1464 | 45 主要的decay是由震荡造成的, 所以如果碰上连涨连跌, 自己又做反了, 那是很可怕
的,不但不是decay, 还会放大。虽说没有什么会永远涨, 但你不一定撑的到振会来
的那天。 |
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b******z 发帖数: 410 | 46 对了,你好想问如果没有decay,为什么花街要创造3xetf.
你上网查能查到为什么,但绝不是为了吃decay。花街不会吃你这点小钱,3xetf有别的
用处。
is
if
on |
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p****a 发帖数: 4829 | 47 3倍的decay比2倍的decay多很多,特别是bear ETF。 |
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c******e 发帖数: 1581 | 48 你卖 170 July 2012 covered call, 我估计你是被跌的吓怕了,想一下就回本。卖当
月的 time decay 快,慢慢玩。July 2012 decay 很慢。
另外,你前一段喊 NOK 快倒闭了,怎么又偷偷买回来了?
1600 |
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d*****d 发帖数: 10658 | 49 这个东东涨起来很快,跌起来更猛.千万不能大仓位买,因为现在处于严重contagion的时
期,VIX:VXV只有0.8,time decay非常严重,换句话说就是VIX涨TVIX涨不多,VIX跌TVIX跌
更猛.等市场波动剧烈的时候(像去年八九月),VIX:VXV大于1,这个时候基本进入
backwadation的时候,进去虽然风险很大,但却是anti-time decay的. |
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g***c 发帖数: 11523 | 50 covered call decay跟short interest 抵消了吧
如果股票不跌,实际上covered call decay没用? |
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